1.
GEOLOGICAL SURVEY OF INDIA [OP. RAJASTHAN (WR)] :
The period under review, cover a part of the field season 2002- 2003 (April, 03 to
September, 03) and a part of the field season 2002-04 (October, 03 to March, 04).
During the field season 2002-2003, a total of 28 items including 5 of STM, 19 of
mineral investigation, 2 of geochemical mapping, l geo-environmental appraisal and 1
item for search for high magnesia rocks were carried out, while during the FS. 20032004, 22 items including 5 of STM, 13 Mineral investigations, 1item for search for rare
metals, 1 of geo-environmental appraisal were taken up along with 2 items on National
Geo-chemical Mapping (NGM). During the period, 1340 sq .km. of STM, 2555 sq .km.
of NGM and 11490.60 m. of drilling was carried out. A brief account of the highlights
of the work done is given below:
(i) Specialized Thematic Mapping (STM) Project:
During the period, 5 STM items were completed and all the items fulfilled their
respective thematic objectives. The STM work in Sandmata Complex delineated 8 km.
x 6 km. zone of sulfide mineralisation within amphibolite/amphibole gneiss in
Salarmala-Jamola sector, Ajmer district. In Tantoti-Sathalia-Sathana area a 6 km. x 2
km. zone has been identified near Jipiya and south of Sathalia exhibiting sulfides
specks in the dugwell mucks within amphibole gneiss. The STM in the contact zone of
Aravalli & Delhi Super group in toposheet No. 45 H/8 identified a structure and
metamorphic hiatus between the two. The STM of Jharol and Udaipur Groups in
toposheet No. 45 H/12, could establish the structural relationship between the two
Groups and work out the nature of emplacement of the ultra mafics. The STM of the
volcano-sedimentary sequence belonging to Delhi Super group in the Basantgarh area,
Sirohi district detailed the structure and metamorphism of this metallogeny important
sector.
(ii) Geo-chemical Mapping:
Under the recently introduced "National Geo-chemical Mapping" (NGM) programmne,
four toposheets falling in two separate geomorphic domains and degree sheets were
covered by geochemical sampling. Stream sediments sampling could be completed in
2800 sq .km. area and some multi elemental analyses has been received.
(iii) Mineral Investigation:
The basemetal investigations included four drilling programme in El/E2 category for
lead-zinc mineralisation in Rajpura-Dariba (RD) belt and one P1 stage exploration
north of RD belt at Gangas, within the basement gneisses. These five items were
pursued by project basemetal-1.Three E-I stage and two P-I stage investigations for
basemetal were carried out under project basemetal-II, while under project basemetalIII the basemetal items were taken up mostly in the Khetri Copper Belt.
The exploration that deserve special mention are from the Rajpura-Dariba belt where
strike and depth continuity of lead-zinc mineralisation were established in the
Sindesar Khurd Extension and Sindesar Kalan East blocks. The other two exploration
projects, which are shaping up well, are in northeastern Rajasthan. The first is the
exploration for copper in Baniwala-Ki-Dahni in Sikar district that appears to be lowgrade high tonnage prospect with potentials for further extension in the northern and
southern strike extensions. This occurrence is unique as it hosts primary bornite
mineralisation with disseminations occurring all along the boreholes. The second
promising prospect is located at Dhani-Basri in Dausa district. This is a copper-gold
prospect hosted along silicified shear zone in the basemetal gneisses close to the
Delhi Supergroup.
(iv) Gold Exploration:
The other exploration programme that met with marginal success are those in the
Bhukia gold area, in Banswara and Dungarpur districts. At the Dungripara prospect
600 m. long and 10 20 m. wide gossan zsosne was delineated with 0.16% average of
Cu. This zone is auriferous and warrants an upgraded follow-up exploration
programme.
(v) Industrial and Fertilizer Mineral:
An item for locating high magnesia rocks under Industrial and Fertilizer.Minerals
(IFM) project could indicate a few ultramafic bodies in Gogunda and Rikhabdev areas
with MgO contents in the range of 32 and 38% . A complete assessment is awaited after
the receipt of analytical data of all the samples.
(vi) Environmental Geology Div :
The environmental project dealt with Geo environmental impact analysis of Jhunjhunu
district. The emphasis on il11pact of copper l11ining in Khetri Group of mines has been
kept in focus during the field investigations.
2.AIRBORNE MINERAL SURVEYS & EXPLORATION GEOLOGICAL SURVEY
OF INDIA (WESTERN ZONE), JAIPUR :
Review material for the period from April, 2003 to March, 2004 :
During the period under review a total of five field items were taken up by AMSE
wing, Western Zone, Jaipur. Out of these one pertains to the ground evaluation of
geophysical anomalies in Gangpur-Nasirabad areas in Bhilwara-Ajmer district. Three
items pertain to the investigation for basemetals and gold in Salumber-Dhariawad
mineralised belt in Udaipur district and one item pertains to integrated surveys for
identifying targets for basemetal and associated gold mineralisation in Bhilwara district.
The details of work carried out, item wise during the period is given below:
Item No. : ASGE/AMS/ZS/2001/0I0 :
TitIe: Ground evaluation of Magnetic and Radiometric aero-geophysical
anomalies resulting from Twin Otter Surveys in parts of Bhilwara and
Ajmer districts of Rajasthan.
Area: Gangapur, Nasirabad.
The area was covered by multi sensors magnetic, electromagnetic and spectrometric
survey by Twin Otter aircraft of GSI during the field season 1994-95 and 1995-96.
Several electromagnetic, aero-electromagnetic and spectrometric anomalies have been
recorded from the belt covering an aerial extent of nearly 6000 sq. km. During the field
season 2001-2002, block IA and II A were ground evaluated.
During the period ending September 2003, 204 nos. of AEM and 40 nos. of magnetic
anomalies have been ground evaluated in block IIB of Gangapur Nasirabad flown belt.
A total of 89 nos of geochemical samples have been collected from favorable
geological and geophysical indications.
The work of ground evaluation has been extended further northeast in Block II C and
11 D of Gangpur-Nasirabad belt. 140 nos of AEM and 10 nos of magnetic anomalies
have been ground evaluated. A total of 70 nos of geochemical samples have been
collected from favorable geological and geophysical indications.
The area exposes migmatites and biotite gneiss belonging to Mangalwar and Sandmata
granulite complex. Large part of the area is covered. Hence the causative source of
anomalies could not be ascertained.
Item No. : A SGB/A MS/ZS/2001/012 :
Title: Integrated surveys for identifying of targets for basemetal and associated
gold mineralisation between Karoi and Sankhi in Bhilwara district (P-II
stage).Bhilwara
Area: Bhilwara
The GSI, under the operation Hard Rock project conducted low attitude multi sensor
(EM, Mag. Radiometric) aero geophysical survey over 30146 sq.km2 area in Rajasthan
during 1967-68. About 12896 EM anomalies have been interpreted and ground
evaluated. Such studies with earlier geological input followed by geochemical surveys
have resulted in identification of several basemetal prospects between Banera-PurSankhli with resources up to 20 million tonnes spread over a strike length of 60 km.
The area exposes supra-crystal sequence within the BGC. The litho units
include amphibolites, calc-gneiss, garnetiferous mica schist impure dolomite/ marble BMQ and quartz - biotite Seri cite schist.
A two-year programme of detailed geological mapping and systematic
geochemical sampling was launched during FS 2001-2002 to identify the target areas in
the intervening gaps between the prospects, in the 10 km long belt in toposheet no. 45
K/8.
During FS 2001-2002 geochemical survey between Rampura and Kaljia Khera
was taken up. Traverse geological mapping (1: 10,000), detailed geological mapping
in Rewara-Manyas and Karas-Devipura blocks have been completed during the FS
2002-03.The work has been closed down as per the schedule time.
A total of 60 cu.m. of trenching was done and 522 nos. of geochemical samples
have been collected. The interpretation part of analytical data is in progress.
A few grab samples, analytical results of which have been received have
indicated primary (bedrock) values of Cu ranging from 0.12 % to 0.900/0, Pb
from,0.28% to 0.58% and Zn from 0.14% to 0.49%.
Few samples in Karas-Devipura have also been analyzed anomalous gold values
ranging from 0.10 ppm to 0.20 ppm.
Item No. MIE/AMS/ZS/2000/009
Title: Investigation for basemetal Inoble metal mineralisation in Ghagri blocks of
Salumber -Dhariawad mineralised belt, Udaipur District, Rajasthan. (E-l).
Area: Ghagri, Udaipur District.
At Ghagri a 700 m long zone of old workings with malachite stains has been recorded.
Surface geochemical surveys on grid pattern have indicated encouraging gold values up
to 0.7 ppm and copper values up to 7000 ppm in bedrock samples in soil samples
copper values up to 4000 ppm have also been recorded.
Drilling investigation was taken up in this block. A total of five boreholes have
been drilled and sixth borehole is in progress.
During the period 531.70 m. of drilling has been carried out in three boreholes
and a total of 201 core samples have been collected. Borehole No.RGH-3 has
intersected two zones of chalcopyrite mineralisation at the depth from 98.25 m. to
102.30 m. (0.93%Cu) and 104.75 m. to 106.45 m. (0.53%Cu). RGH-4 hole also
intersected two zones of mineralisation at the depth from 86.15 m. to 03.50 m. and
124.60m. to 180.45m. RGH-5 has intersected only one zone of chalcopyrite.
mineralisation from 127 .25m. to 136.75 m., it appears from the subsurface information
that the ore zones gradually thin out in southeastern directions.
Item No. MIE/AMS/ZS/2003/011
Title: Investigation for basemetal mineralisation in Umarvaniyan Block.
Area: Salumber-Dhariawad Area, Udaipur District.
Aerogeophysical anomaly evaluation has demarcated an anomalous zone of short width
6 channel EM anomalies over dolomites in Umarvaniyan area. The rock .types exposed
in this area comprise dolomite and phyllite belonging to Debari Group of Aravalli
Super group. Geochemical survey in the area at 50 m. x 25 m. grid has brought out an
anomalous zone of mineralisation extending for over 500 m in strike length. The litho
geochemical results have recorded anomalous Zn value in the range of 500 ppm to
2400 ppm associated with Pb value from 10 ppm to 240 ppm .
In view of encouraging anomalous geochemical values, the area has been taken up for
drilling exploration in F.S.2003-04.Two bore holes totaling 349 m .of drilling have
been completed and third is in progress. Analytical results are awaited.
Code No.: MIE/AMS/ZS/2002/013
Title: Test drilling for Gold and associated basemetal mineralisation in Dugocha
(South) and Dugocha (East) Block, Udaipur district, Rajasthan.
Area: Dugocha South block. East block, Udaipur district.
Detailed mapping :
An area of 0.48 sq. km has been mapped on 1:1000 scale in the Southern strike
continuity of Dugocha Main Block, Udaipur district. The rocks of the area belong to
Jagpura Formation of Debari Group of Aravalli Super group.
The litho-units exposed in the area is dolomitic marble, calc-silicate, quartzsericite-schist, graphitic schist, tuffaceous rocks, and meta-exhalite. These rocks are
profusely permeated by quartz, calcite and pegmatite veins. In the southern part of the
area a large body of tourmaline bearing pegmatite is exposed. Tourmaline crystals
range in size up to 3-4 cms.
The graphitic sericite schist exposed in the southern part of the area is widely
ferrugenised and oxidised.
The rocks show evidence of polyphase (3 phases) deformation. The general
trend of the rocks is NW-SE with moderate to steep dip towards SW with local
variations. Northerly plunging tight, upright Fl folds and near recumbent NNE-SSW
trending F2 folds in the northern and central part of the area are recorded. F3 folds are
preserved as broad open warps trends EW with steep plunge towards west. Besides, the
litho units show effects of shearing along NNW-SSE trending planes. These are
manifested by mylonitic banding, stretching of quartz grains, linear disposition of litho
units and presence of S-C fabric in the rocks and also presence of shear folds (slip
folding). In the eastern part of the area the linear east west trending litho units are off
set by N-S trending cross faults.
Geochemical sampling
A total of 85 cu.m or trenching has been carried out in Dugocha south block and 212
nos of geochemical samples from various litho logies have been collected. The
analytical results are awaited.
Drilling
A total of 1182.35 m of drilling has been taken up in Dugocha South Block and East
Block in six boreholes DCHS-3, DCHS-4, DCHS-5& DCHS-6 (Dugocha South block)
and DCHE-1 & DCHE-2 (Dugocha East block).
In Dugocha south block at a total of 600 m. strike length of mineralised zone
has been test drilled. All the boreholes (DCHS-1 To DCHS-6) intersected thick
sequence of metaexhalites, calc silicates and quartz mica schist with sulphides
mineralisation. The analytical results of few boreholes have indicated weak gold
values (0.1-0.2 ppm). Boreholes DCHE-l and DCRE-2 spaced 100 m apart in
Dugocha east block intersected massive sulphides. The analytical results are awaited.
3.
COALWING (GEOLOGICAL SURVEY OF INDIA,KOLKATA)
A.
Progress of work done in Rajasthan by Coal Wing, Geological Survey
of India during the year 2003-04 (April, 2003 to March, 2004) :
1.
Regional exploration for lignite in Mithra block, Barmer district, Rajasthan
(Item Code No. MIE/CW/CW/2002/014).
The investigation was taken up during the field season 2002-2003 in view of the
encouraging results obtained in Mahabar-Shivkar area to further establish strike
and dip continuity of lignite seams vis-a-vis appraisal of lignite resource
potentiality.
Exploration for lignite in Mithra block located in southern continuity of MahabarShivkar block commenced on 9.10.2002. A total of 539.90 m. was drilled in four
boreholes. Thin lignite horizons ranging in thickness from 0.40 m. to 0.50 m. were
intersected within a depth range of 90.00 m. to 224.40 m. The interpretations of
subsurface data accrued reflect attenuation of lignite seams in this part of the
exploration block and the development of lignite seams are interrupted by marine
sediments rendering the block as non potential. Hence, the investigation in Mithra
block was concluded on 30.9.2003.
2.
Regional exploration for lignite by scout drilling in Nagrasar area, Bikaner
district, Rajasthan (Item core No. ME/CW/CW/2003/015).
The Nagrasar area is located in the southwestern part of Palana basin
Department of Mines & Geology, Rajasthan (DMGR) has explored and
surveyed the areas just east of Nagrasar area namely, Raneri, Mandal Charan
and Heera Ki Dhani and lignite seams are already proved in these blocks. As
suggested by DMGR, western continuity of these lignite horizons have to be
proved in the virgin areas around Nagrasar and further west.
The investigation in Nagrasar area commenced on 30.12.2003after rnobilization
of operational units from Barmer. A total of 253.00 m. have been drilled. Two
boreholes have been completed. A maximum of about 125.00 m. of tertiary
sediments has been intersected in a borehole drilled north of Nagrasar. No
lignite seam has been intersected in these two bore hole.
B. Investigation proposed by Coal Wing, Geological Survey of India during
the F.S.2004-2005:
1. Title:
Regional Exploration for lignite by scout drilling in
Nagrasar area, Bikaner district, Rajasthan.
2.
Objective:
To locate lignite bearing blocks and to assess the lignite
resource potential.
Nature of work
Total work
(a) Expected year Work already Work
load
of completion
envisaged
completed till proposed
(b) Submission of March,04
final report
Drilling (2 drill 3600 m.
(a) 2004-05
units)
(b) March,2006
and
for 2004-05
F.S.
253m.
2200m.
-
-
50 m.
-
-
As
geological
boreholes
logging
Core sampling of 75 m.
lignite
Geophysical
As
boreholes
necessary
logging
necessary
4. M/s HINDUSTAN ZINC LIMITED:
A. Hindustan Zinc Limited Annual Progress of Exploration (April 2003
March 2004):
1. Kayar ML
A total of 4.9 million tonnes of demonstrated reserve containing 1.92% Pb, 11.70% Zn
and 43 g/t Ag has been outlined over 800m strike extent. In addition, 0.43 million
tonnes of possible category is also estimated. The bulk of reserve is located 200-250m
below surface. The mineralisation is lensoidal in nature with profuse intrusion of
pegmatite.
The previous soil geo-chemical results at 200mx20m grid indicated a few
isolated anomalous peaks of Pb & Zn in an area located 200-300m east of the main
mineralisation. These are considered to be manifestation of a deep seated
mineralisation. A total of 112 additional soil samples were collected to in-fill the gaps
in sampling. The results are awaited.
If persistence of geochemical signature is noted, then Time domain EM
(TDEM) and RC-cum-core drilling will be planned to enhance the resource in depth.
2. Agucha Extensions
HZL is having two Prospecting Licenses - one in north and the, other in south
extension of Rampura Agucha mine.
.
In north area, a 4km long prospective zone has been delineated based on the
integration of ground magnetic survey, soil geochemistry and TDEM data. This zone,
in part, has a coincident weak EM and soil geo-chemical response ± magnetic
association. This zone is under investigation through core drilling. One hole of 40
1.60m length has been drilled over a feeble soil geochemical zone but no mineralization
was intersected. Another deep hole is planned further north to test the concealed target
location.
In south extension, soil geo-chemical sampling (87 Nos.) and ground magnetic
survey (13.5 line km) has been done to locate promising areas. One hole of 311.15m
was drilled in old working area south of the mine, which intersected insignificant
pyrite-pyrrhotite at places.
Further work involving TDEM survey and drilling is in progress in both the
areas.
3. Ajmer RP (RP-l/2001)
Exploration comprising of geological mapping, rock chip and soil geochemical
sampling, and OHR data interpretation was continued. An area of 250 sq km was
relinquished. In the retained area, soil geo-chemical sampling was carried out in the
most prospective 45 sq km containing OHR conductors and favorable lithological
domains. A total of 700 samples were collected which were analyzed for Pb, Zn Cu, Fe
and Mn. Preliminary look at data indicates no anomalous values.
.
Further interpretation through thematic mapping is in progress.
Expenditure (provisional): During the year - Rs. 4.1 Lac. Cumulative Rs. 14.10 Lakh.
4. Gulabpura RP (RP-2/2001)
Regional geological mapping (~ 300 sq km area) was carried out in northern part of RP.
Most of the mapped area comprises of granite gneiss with subordinate amount of
amphibolite, biotite schist, psammo-pelite rocks. and pegmatite. Locally calc
silicate/dolomite is also mapped but no mineralisation signatures are noted. Work is in
progress.
Future. programme: Locating potential zones of mineralisation through mapping and
geo-chemical sampling in the remaining area.
Expenditure (provisional): During the year - Rs. 3.4 Lac. Cumulative Rs. 4.40 Lac.
5. DEPARTMENT OF PETROLEUM:
1. INTRODUCTION:
Government of India had identified 12 blocks in Rajasthan for oil & gas exploration. 6
blocks awarded to National/Multinational Companies & 6 blocks shall be awarded in
next rounds of NELP Bidding. Exploration is underway in 6 blocks as per below:
i) Block RJ-ON-90/1 Barmer -Sanchore Basin, M / s Cairn Energy:
Initially, Shell India carried out exploration &. discovered light oil, and transferred the
operator ship to M/s Cairn Energy of Scotland. The company drilled 18 wells till now
and discovered oil in 12 wells. .Drilling of 4 more wells is in progress and testing for
oil in underway .Reserves of 200 million tones have been assessed in this area.
Further exploration work is under progress. Production of oil & gas in BarmerSanchore Basin is expected from 2006-07.
ii) Block RJ-ON-90/5 Bikaner-Nagaur Basin, M/s Essar Oil Ltd. :
M/s Essar Oil has drilled two wells n/v Nanuwala & Binjbayla, District
Sri Ganganagar and light oil of 34º API specific gravity has been discovered in
Nanuwala well where as indications of oil have been observed in Binjbayla well
but oil could not be discovered.
iii) Block RJ-ON-6 Jaisalmer Basin , M/s Phoenix Overseas Ltd.
2- D seismic survey is completed. It is expected to drill 3 exploratory wells
during 2004. There is a possibility of getting good quality of oil/gas in this
block.
iv) Block RJ-ONN-2000/1 Jaisalmer Basin, Oil India Ltd. :
Reprocessing of 2D seismic data completed. 250 LKM of 2D seismic data
shall further be acquired.
v) Block RJ-ONN-2001/1 Bikaner-Nagaur Basin, Oil India Ltd. :
Reprocessing of 500 LKM of 2D seismic data is in progress. 3D seismic data shall also
be acquired.
vi) Block RJ-ONN-2002/1, Bikaner-Nagaur Basin, OIL & ONGC :
This block has recently been awarded to OIL & ONGC. OIL has applied PEL for
Block on 01.03.2004 and proposal is under process with State Government for the
grant of PEL.
2. PROGRESS CARRIED OUT DURING 2003-2004 :
1.
The Department of Petroleum and GAlL (India) have signed Gascooperation
Agreement (GCA) on 10.09.2003 and are jointly undertake a comprehensive gas sector
study covering the gas demand and assessment of pipeline infrastructure and other
related facilities to supply gas to cover major end users like Industrial, Commercial and
Transport sectors. Besides the Mathania Power Plant Demand-Supply Assessment
study has been carried out for Kota, Chittaurgarh, Bhilwara, Pali & Jodhpur district
enroute to Kota - Mathania Sector.
2.
One Block of Rajasthan namely RJ-ONN-2002/1 has been included in NELP IV
round of bidding of Government of India for oil & gas exploration & awarded to OIL &
ONGCL in Joint Venture.
3.
To "invite"Expression of Interest" from private entrepreneurs to undertake
Underground Coal Gasification project for generation of power in District Barmer, 2
Blocks have been carved out however, approval from Government of India is still
awaited.
4.
The Department has entrusted 100+ 20 LKM High Resolution Seismic Survey
(HRSS) to NGRI, Hyderabad. This will decipher deep-seated lignite zones in the area,
which shall be potential for CBM. About 83 LKM Seismic Survey is completed.
5
Data regarding CBM content & other Physico-Chemical properties of lignite
tested by CMRI has been incorporated in the Data packages for 2 CBM Blocks of
Rajasthan release under 2nd Round of CBM Bidding by Government of India.
6.
Geological & Reservoir studies has been conducted by PDVSA, Venezuela for
the establishment of producibility of heavy oil in Baghewala area District Jaisalmer.
7
Efforts have been made to increase the supply of Natural Gas to Ramgarh based
power plant, which has recently been upgraded from 35 MW to 110 MW from the
reserves of good quality gas discovered by Oil & ONGCL.
3. INVESTIGATION PROPOSED FOR THE YEAR 2004-05 :
1.
Cairn has planned to drill a total of 59 wells in Barmer- Sanchore Basin.
2.
3 Exploratory wells shall be drilled by Pheonix Overseas in Jaisalmer Basin.
3.
750 LKM of 2D & 250 sq .km. 3D seismic data shall be acquired by Oil India
Ltd .in 2 blocks of Jaisalmer Basin.
4.
Expression of Interest shall be invited from private entrepreneurs to undertake
UCG operation in deep seated lignite deposits of Barmer Sanchore Basin after
the approval of Government of India. .
5.
High Resolution Shallow Seismic Survey shall be completed for 100+20 LKM
in Bikaner - Nagaur Basin which shall be followed by drilling of 2 boreholes
for CBM.
6.
Field Trial of Pilot Project shall be undertaken for the exploitation of heavy oil
resources i.e. 14.60 MT heavy oil & 33.2 MT Bitumin in Bikaner - Nagaur
Basin.
7.
Implementation of Techno - Economic Study conducted jointly by of Petroleum
& GAlL to develop pipeline infrastructure from Kota - Mathania for the supply
of 15 MMSCMD of R-LNG.
6.
M/s RAJASTHAN STATE MINES AND MINERALS LIMITED:
The year 2003-04 has witnessed RSMML attaining new heights in almost all areas of
physical and financial performance. RSMML has achieved highest ever production and
sales during this period. The turnover of the company is expected to touch the level of
Rs. 423.80 Crores, the target for 2004 - 2005 regarding turnover is + 525 crores. The
contribution to the exchequer for the year 2003-2004 is expected to be Rs. 112.77
Crores.
After amalgamation of RSMML with erstwhile RSMDC the company has undertaken a
major corporate restructuring initiative by setting up four Strategic Business Units &
Profit Centre (SBU & PC) , i.e. Rock Phosphate, Gypsum, Limestone & Lignite:
The company is also aware about its responsibility towards Social Obligations and
is concerned about Safety and Environment. Therefore company has provided Rs.
260.00 Lac for Rural & Urban Development and a sum of Rs. 120.30 Lac for
Afforestation, Plantation. & Environmental Restoration. RSMML also plans to
explore new frontiers in Gypsum and Limestone.
The division wise summary of achievements during the year 2003-04 and the targets
for the year 2004-05 are given in the following paragraphs.
R.S.M.M.L. is engaged in mining of the following Major Deposits:

.Rock ,Phosphate at Jhamarkotra and Kanpur group of mines Udaipur,

Gypsum occurring in the districts of Bikaner, Sri Ganganagar, Hanuman garh,
Jaisalmer, Barmer.

S.M.S. Grade Limestone near village Sanu at Jaisalmer and Chemical/Cement
grade at Gotan (Nagaur).

Ligilite at Giral in Barmer district & Kasnau - Matasukh in Nagaur district.
A brief account of the activities carried out in the above projects, during the financial
year 2003 to 2004 by R.S.M.M.L, is as follows:
1. Rock Phosphate Project:
Rock Phosphate Project near village Jhamarkotra & Kanpur group of mines in district
Udaipur is under active mining in A block (marginal grade), D, E & F Blocks for
mostly High Grade Ore (HGO) & Blocks B, C, for Low Grade Ore (LGO).
The production of Rock Phosphate during the financial year 2003-2004 was as shown
below :
Types of ore
Quantity (Lakh Tonnes)
Target Quantity 2004-05
(Lakh Tonnes)
High Grade Ore
8.36
6.25
Medium/Low Grade Ore
3.91
11.00
Total Ore
12.27
17.25
Total Overburden
125.52
137.75
Total Rock Handling
137.79
155.00
S.No Particulars
Budget
estimate
(2004-05)
(Rs.Lakhs )
Jamarkotra
Kanpur
26.00
24.00
1.
Prospecting & Development charges
2.
Social Responsibility For Urban & Rural 170.00
5.00
Development
3.
Forest
Plantation
&
Environment 35.00
5.00
Clearances
Total
2.
231.00
34.00
Gypsum Project:
The excavation of gypsum /Salenite is being done by contractors . The production
of Gypsum / Salenite from the different mines was 22.73 Lakh Tonnes.The
production target for 2004-05 has been placed at 25.00 Lakh Tonnes.
The following Budget provisions have been kept for the financial year for the
Gypsum SBU & PC
S.No Particulars
Budget estimate (2004-05) (
Rs.Lakhs)
1.
Prospecting & Development charges
1375.00
2.
Social Responsibility For Urban & Rural 25.00
Development
3.
Forest Plantation & Environment Clearances
Total
3.
25.00
1425.00
SMS Grade Limestone Project:
The production of SMS Grade Limestone was 18.47 Lakh tonnes .
The Production target for 2004-05 has been placed at 21.22 Lakh Tonnes.
The following Budget provisions have been kept for the financial year for the SMS
Grade Limestone SBU & PC:
S.No. Particulars
Budget estimate (2004-05) (
Rs.Lakhs)
1.
Prospecting & Development charges
35.00
2.
Social Responsibility For Urban & Rural 25.00
Development
3.
Forest
Plantation
&
Environment 5.30
Clearances
Total
4.
64.50
Lignite Projects at Giral & Kasau_ Matasukh :
Lignite is being exploited from Giral and Kasnau – Matasukh depoists . During the
period April 2003 to March 2004, Mineral Exploration Corporation , Nagpur , on
behalf of RSMML , undertook Confirmatory Core Drilling operations in the Kasnau
Block.
The production of Lignite during the financial year 2003-2004 was as shown below:
Name of the deposit
Production ( Tonnes)
Giral
5,68,217
Kasnau - Matasukh
1,09,594
Total
6,77,811
The production target for 2004-05 has been placed at 12.00 lakh Tonnes.
Further , the following Budget provisions have been kept for the current financial
year.
S.No. Particulars
Budget estimate (2004-05)
( Rs.Lakhs)
1.
Prospecting & Development charges
50.00
2.
Social Responsibility For Urban & Rural 30.00
Development
3.
Forest
Plantation
&
Environment 55.00
Clearances
Total
5.
135.00
Minor Deposits
Minor Deposits of minerals like Flourspar,Granite and Green Marble are also
being worked by RSMML and the details of the same are presented below:
 Flourspar and Graphite : The Flourspar ( Dungarpur ) and Graphite (
Banswara ) projects are lying closed and possibilities of reviving the Flourspar
units under active consideration . The proposed expenditure booked under this
head is estimated at Rs. 66.84 lakhs.
 Green Marble : This units is lying closed for the last two years . The decision
of contracting out the mines could not be implemented on account of wants of
clearance from the government.
6.
New Projects and R & D activities :
Some projects that RSMML intends to work on are:
 Developing a new technology for POP using exhaust fuel gasses.
 Developing cost effective technology for Gypsum plaster bricks suitable for
desert environment.
 Development of Synthetic gypsum
 Designing a bioreactor to recover methane from carbon based solid fuels.
 Application of Phosphate Rich Organic Manure (PROM) technology is taking
shape and is expected to give good results in the agricultural sector.
7.
OIL INDIA LIMITED:
Oil was awarded the NELP Block RJ-ONN- 2000/1 under NELP II round of
bidding . The total area of the Block is 2535 Sq Km and falls in the district of
Jaisalmer . The activities committed under Minimum Work Obligation i.e. API of
250 LKM of 2 D seismic data are on schedule. Reprocessing of 350 LKM of
existing 2D seismic data has been completed utilizing in–house facilities.
Environmental Impact Assessment (EIA ) study prior to carrying out seismic survey
has been carried out and the report submitted to State Government on 14-05-2002.
The API of 250 LKM of 2 D seismic data is scheduled to commence from quarter
of 2004-05.
OIL has been awarded the NELP Block RJ-ONN-2001/1 under NELP III round of
bidding. The total area of the Block is 3425 Sq .Km and falls in the district of
Bikaner. The activities committed under Minimum Work Obligation i.e., API of
350 Sq. Km of 3 D seismic data and drilling of three exploratory wells are on
schedule. The minimum work program has now been revised to API of 250 Sq Km
of 250 Sq. Km of 3 D seismic data and 500 LKM of 2 D seismic data. Reprocessing
of 500 LKM of existing 2 D seismic data has already been completed under a
contract. Environment Impact Assessment ( EIA ) study has also been completed in
the Block prior to seismic surveys under a contract service . The 3 D seismic API is
scheduled to commence from 1st week of May 2004. 2D seismic API is likely to
commence from second quarter of the year 2004-05.
For the purpose of establishing techno-economic feasibility of the heavy oil and
bitumen reserves established in Bikaner – Nagaur basin, a Consultancy has been
awarded to M/s PDVSA , Intevep, National Oil Company of Venezuela in
November'02. The work on the same commenced in March 2003 and the interim
report of phase I of the said study is submitted by the Consultants in January 2004.
Final report on the study is likely to be submitted by end June 2004. OIL will chalk
out an action plan for exploitation of heavy oil and bitumen based on the
recommendations made by the Consultants.
OIL has been awarded the Block RJ – ONN- 2002/1 encompassing an area of 9900
Sq Km under NELP IV round of bidding .The minimum work program for the
Blocks is API of 150 LKM of 2 D seismic data and reprocessing of 200 LKM of
existing 2 D seismic data . PEL application for the Block has been submitted on 0103-04.In principle approval from Government of India has been received however;
formal grant of PEL is awaited from State Government. Arrangements are in hand
to carry our pre-seismic EIA study in Block . API of 2 D seismic is scheduled to
completed during 2005-06.
8.
M/s HINDUSTAN COPPER LIMITED:
Progress Report 2003-2004:
Name of the Mine
Reserves as on 1-4- Diamond drilling
Mine Development
2003
Khetri Copper Mine 59.60 Million Ton x NIL
42 Mtrs.
1.36% Cu
KolihanCopper
22.81 Million Ton x 387.60 Mtrs.
mine
1.32% Cu
Chandmari Copper 0.095 Million Ton x NIL
Mine
542 Mtrs
NIL
1.32% Cu
Khetri Copper Mine remained non- operation from Jan.,03 to Dec.03 while
Chandmari Mine remained non operative throught out the year.
9.
ATOMIC MINERALS DIRECROATE FOR EXPLROATION AND
RESEARCH:
A
Summary of work carried out during the field season 2003-04 in the State of
Rajasthan:
Western Region of Atomic Minerals Directorate for Exploration and Research with
headquarters at Jaipur is guiding surveys and exploration for uranium and other
radioactive minerals in the State of Rajasthan and Gujarat. The highlights of the
investigations carried out in Rajasthan are summarised below:
I. SURVEY:
Reconnaissance radiometric surveys were carried out in Aravalli Super group of rocks
in Chittaurgarh and Rajsamand districts, east Jahazpur Group of rocks in Bhilwara
district, Delhi Super group of rocks in the North Delhi Fold Belt in Sikar, Jhunjhunu
and Nagaur districts, Marwar Super group of rocks in Nagaur district Sambhar Lake
area in Nagaur, Ajmer and Jaipur districts.
II.
DRILLING:
A.
ROHIL-GHATESHWAR AREA SIKAR DISTRlCT, RAJASTHAN :
Reconnoitory and exploratory drilling was continued in Rohit Ghateshwar area to
explore the uranium and associated mineralsiation in albitites (Delhi Supergroup).
Encouraging uranium mineralisation intercepts have been recorded in boreholes at
vertical intercepts ranging from 150 to 250 m.
B.
TIKHI AREA, BHILWARA DISTRICT, RAJASTHAN:
Reconnoitory drilling was started in Tikhi area (Jahazpur Group). Bhilwara district,
Rajasthan to explore the possibility of uranium mineralisation hosted in banded
dolomitic quartzite. Interim gamma ray logging of the two boreholes being drilled in
the area did not record any significant uranium mineralisation.
III.
EXTRA – DEPARTMENTAL BOREHOLE LOGGING:
Gamma-ray logging of the 31 boreholes (total logged depth 6023.10 m.) drilled in
different parts of Rajasthan (Barmer-Bikaner-Jodhpur-Dausa Sikar area) by different
exploration agencies like GSI, MECL and DMG, Rajasthan was carried out. No
significant
uranium
mineralisation was
recorded in these broeholes.
Lean
mineralisation was recorded in the following boreholes, which were drilled for lignite
exploration.

MECL borehole MNN-5 drilled in Bodwa-Chawa area, Barmer district
radio activity of 0.010% eU3Og x .050 m. (165.85 to 166.35 m.) and
0.04% eU3Og x 0.60 m. (202.15 to 202.75 m.).

MECL borehole MNN-18 drilled in Bodwa-Chawa area, Barmer district
indicated radioactivity of 0.012% eU3Og x 0.60 m. (108.05 to 108.65 m.).
IV.
MICELLANEOUS:.
For approval of mining lease for garnet mining, assessment report was prepared for
atomic minerals potential in Deokhera area, Tank district, Rajasthan.
10.
INDIAN BUREAU OF MINES:
Progress of work carried out by IBM in the State of Rajasthan during the year
2003-2004 (April, 2003 to March, 2004).
1.
Geological studies/special studies/MCDR inspection carried out during 20032004:
A.
MCDR Inspections:
A total of 241 mines located in Rajasthan state were inspected by Ajmer and A
category wise break-up.
Category
Mech.O/C Mines
Mech. U/G mines
Number
20
12
Lease expiring within last 2 year 03
Ministry reference
Nil
Other (i) Cat A
Nil
(ii) Cat B
206
TOTAL:
241
Mining Plans/ Scheme disposal
(a) Inspections:
In Rajasthan State 50 mining plan/scheme inspections have been carried out.
Received - 86 Nos.
Approved - 85 Nos.
(b) Approval of Mining Plan/Scheme:
B.
Geological studies carried out during 2003-2004 :
Special Integrated Study (SIS) of limestone mines of Rajasthan.
During the year 2003-04, 21 limestone mines in Rajasthan were covered under
geological study. The outcomes of the study are enumerated below:
1. Outcome of the SIS of limestone mines of Rajasthan:
1.
Limestone deposits of Rajasthan are widely distributed geographically as well
stratigraphically. The important deposits are located in the districts of Ajmer,
Pali, Bunch, Jodhpur, Jaisalmer, Nagaur & Sirohi.Geologically major limestone
deposits can be grouped under Delhi Supergroup, Vindhyan Supergroup and
Eocene.
2.
All grades of limestone are found in Rajasthan. Predominant grade is cement
grade, which occurs in Ajmer, Pali, Sirohi districts. High grade limestone with
low iron content is found in Gotan area of Nagaur district. In Jaisalmer district,
Sanu limestone is having upper 4.5 m. 5.0 m. as SMS grade. The lower 15 m. is
cement grade.
3.
Generally exploration done is adequate. The insitu reserves are of the order of
1343466 thousand tonnes, out of which 68027 thousand tonnes come under
proved category, 293346 thousand tonnes under probable category and 369539
thousand tonnes under possible category. The recoverable reserves are of the
order of 1012187 thousand tonnes, out of Which 529105 thousand tonnes come
under proved category, 209671 thousand tonnes under probable category &
273411 thousand tonnes under possible category.
4.
As per UNFC system of classification, total resources arc or the order of
1108315 thousand tonnes, out of which 529104 comes under m category,
209671 thousand tonnes under 12 1-122 & 369539 thousand tonnes under
category.
5.
Most of the limestone mines in the region are captive sources of limestone for
their cement plants. Others either supply high grade limestone to these cement
plants or to the steel industries. Besides the captive mines, others are either
mechanized or semi-mechanized to manual depending upon their daily
requirement. Mining in most of the area is systematic vis-a-vis bench formation.
6.
The production of limestone from all mines under study during the year 200203 was 15197319 tonnes and during the last five years was 71300512 tonnes.
7.
In limestone mining, waste generation is in the form of overburden, side burden,
and interburden. The waste maimy comprises of clay, shale, sandstone,
dolomite, schist, gneisses & impure limestone.
8.
Beneficiation problems identified:
(i)
Screening test of bulk sample (120 kg.) of limstone undersized reject
sample from Rampura-Baliupura limestone mine in sikar district belonging to
M/s Lucky Mining Pvt. Ltd. :
There is around 8000 tonnes of undersized limestone reject lying with in
the lease with a potential to generate another 200-300 tonnes of fines per month.
At present the hand picked material of about 40 mm. size recovered from these
fines, is being occasionally blended with high grade limestone and sold to
cement plants. The undersized limestone fines are comprising of limestone of
varying sizes admixed with clayey gangue material and is being generated as a
result of altered calc-chlorite schist occurring intermittently as interburden with
in limestone. The CaO content of this material is reported to be < 40%. The
desired fraction should be of > 45% CaO at coarser size +25 mm. The
beneficiation test has been given to Regional Ore Dressing Laboratory, IBM,
Ajmer & the result is awaited.
(ii)
Beneficiation test of bulk sample (100 kg.) of limestone rejects (high
grade) from Sanu-I limestone mine of M/s R.S.M.M.Ltd. district Jaisalmer :
The bulk sample has been collected from the high grade mineral reject (0-30
mm.) which is generated to the extent of 12-15% during secondary blasting and
is utilised in backfilling of mined out pits. As much as 11 lakh tonnes of such
mineral is lying in Sanu-I limestone mine and 3-3.5 lakh tonnes in Sanu-II
mines. The annual generation of such material is 2-2.5 lakh tonnes from the two
mines. The following up gradation is desired in the above sample by
beneficiation test and the investigation has been referred to Regional Ore
Dressing Lab., IBM, Ajmer & the result is awaited.
Radicals
Existing
Desired
CaO
53.32 %.
-
Si02
1.52 %
-
MgO
0.30%
-
R203
0.74 %
-
Fe203
0.5 %
<0.1 %
If desired upgradation is achieved, the material sale pride will increase from Rs.
80/- per tonnes of 650/- per tonnes after pulverization to 200 mesh. This
material may find market in pharmaceuticals and white cement.
(iii) Screening test of bulk sample (100 kg.) of crusher reject from Morak
limestone mine of M/s Mangalam Cement Ltd., Kota :
The present practice of beneficiation includes crushing and screening of ROM
limestone whereby < 15 mm material consisting of clay, shale and limestone is
screened out and is utlised in backfilling along with other waste material
(overburden). Such type of material constitutes about 10-12% of the total ROM
fed to the crusher. At present there is no stock of such reject in the mine;
however there is continuous generation of such reject on daily basis, which at
present is being backfilled. During inspection it was observed that such rejects
contain appreciable quantity of limestone, which if separated from the clay
particles could be utilized in the plant.
It is desired to get the sample analysed in different sieves and find out the lime
and silica content with recovery % in various fractions.
Radical
Existing
Desired
TC
62.63 %
<76%
CaC03
158.5-62 %
-
Si02
17 - 25 %
< 17%
MgC03
2.11-2.15 %
-
s
One of the problems likely to be faced with smaller sieve size is the clogging of
the fine stickly shaly matter in the sieve pores there by adversely impacting the
quality of material, suitable solutions for the same may also be suggested. The
beneficiation test has been given to Regional Ore Dressing lab, IBM, Ajmer &
the result is awaited.
9.
The impact of mining operation beings with exploration activities, extends
through the stage of extraction, processing of mineral and continues up to the
closure of mining operation. The activities have great potential to change
landscape, pertaining to environment and socio-economic aspects. It is the local
population, which suffers more than the benefit it gets. it becomes the duty of
the mining enterprises to provide welfare means not omy to its employees but
also to the local inhabitants. The mining companies of limestone mines have
done noticeable work towards the field of education, vocational training, health
and hygiene, infrastructure development i.e. housing, communication, transport,
water supply; mass education, recreation and cultural activities. More stress is
needed towards community development. In fact, the mining companies should
have separate budget allocations for well planning of these types of jobs.
10.
Most of the category. A mechanised mines have reported an increase in
production of limestone over the last five years however the smaller B category
mines have reported fall in production of limestone owing to shutting down of
the mini cement plants.
11.
The big cement plants are performing well in terms of their capacity utilisation
and are mostly operating at more than 100% capacity utilisation however the
white cement plants are operating at about 70% of their capacity.
12.
Some cement plants have started using pet coke as an alternate fuel for
manufacture of cement such as Shree Cement, J .K. White Cement and Laxmi
Cement.
13.
Production of blended cement by using fly ash has also picked up during last
few years, which is a good sign of conserving mineral (approximately 300 kg.
of limestone is conserved per ton of cement by adding 20% fly ash to the clinker
for manufacture of PPC) resources by using the environmental wastes generated
from the power plants. This is also saving valuable energy resource without.
affecting the overall production target.
.
Based on the outcome following suggestions have been made.
(A)
Suggestions of mine owners:
(i)
Rajshree-I Limestone Mine of M/s Grasim Industries Ltd., District Nagaur:
Consequent to the earlier I.B.M. suggestions vide letter No.RAJ/Nagaur-25/Lst6, dated 5.7.2002, they were advised to 'stop backfilling of the pit and take up
exploration from the pit bottom for knowing additional layer of limestone,
which could be economic for further mining at depth. As 3 exploratory bore
hole has been made at the bottom of the pit, which proved to be negative of
mineralisation, they are hereby advised to resume the backfilling work in the
worked out portion of the pit. It was pointed out that the height of backfilled
area had become more than the surrounding ground level, it is advised to restrict
the height of the backfilled portion to the surrounding ground level and level the
same. The top soil from the advancing face may be utilized by spreading it over
the backfilled area and plantation may be done. The action taken on the above
suggestions may be reported to the Regional Controller of Mines, IBM, Ajmer.
The suggestions have been acknowledged by the party and agreed to implement
the same.
(ii)
Nimbeti Limestone Mine of M/s Shree Cement Ltd., District Pali :
It is observed that significant quantity (approximately 10%) of interstitial clays
are being generated from the limestone horizon which are being dumped along
with the boulders of waste rock (pegmatite & calc-gneisses). It is suggested that
these clays may be separately stacked/dumped from the boulders. Subsequently
when any area becomes natured for backfilling and reclamation, the clays may
be spread over the top of the leveled waste backfilled, which may support
plantation. The action on the above suggestions may be reported to the Regional
Controller, IBM, Ajmer.
The suggestions have been acknowledged by the party and agreed to implement
the same.
(iii)
Sanu-I Limestone Mines of M/s RSMM Ltd., District Jaislamer:
It was pointed out to the party through violation letter that 1520 hect. patch of
limestone for a depth of 2.0 still contains SMS grade of limestone which was
left earlier due to manual mining. In the interest of mineral conservation and
systematic development of the mines, it needs to be worked. The party has
agreed to implement the same. Further, they were also advised to take up
exploration in 1.982 sq. km. possible block by drilling as per proposal made in
approved mining plan to which the company has agreed upon.
(iv)
Community Development:
Over all limestone mining and processing activities has brought prosperity in
villages and tribal population in surrounding areas by way of employment
infrastructure development, health, safety and environment. However, it is
observed that living shelters/hutments for labourers are not adequately provided
with essential amenities to which management should pay attention.
(B)
Suggestions to the Government:
(i)
Due to closure of mini cement plants owing to recession in cement in last
decade, the production of limestone of cement grade in Neem Ka Thana and
Kotputli area is substantially decreased by 80. As a result selective portions of
these deposits have worked for sweetener and dispatched to cement plants in
state and partly being consumed in local time kilos. Therefore it is suggested
that cement plants of about 3 million tonnes capacity have to be established in
these area sp that these deposits are systematically developed for want of raw
material.
Likewise, in Sanu area of Jaisalmer, cement grade limestone occurs below SMS
grade horizons. About 167.6 million tonnes ,of cement grade limestone have
been estimated. The reserves have also been added from contiguous leaseholds.
Besides, 16.4 tonnes of mineralised reject are laying at mine site. Looking to
ample availability of resources of lignite in vicinity of the area, a lignite based
cement plant can be feasible in the area.
(ii)
Many limestone leaseholds have been granted under minor mineral in Gotan
area of Nagaur district. Majority of the production from these mines are
supplied to the cement plants throughout Rajasthan as a sweetener/high grade
for manufacture of cement. Considering its industrial use; very high, calcium
and low silica content and attention required towards mineral conservation and
development aspects of these leases, these leases of minor mineral might be
converted into major mineral leases.
(ii).
1.
Ore Dressing/Laboratory Investigation completed during2003-2004 :
F/NC Beneficiation of low-grade rock phosphate sample from sub-grade or
edumps of Jhamarkotra mines of M/s RSMML , Udaipur , Rajasthan.
2.
F/NC Beneficiation of low-grade china clay, sample from Mangrop China Clay
Mine of M/s Singh Jain , district Bhilwara , Rajasthan .
3.
F/NC Beneficiation of copper sample from M/s Hindustan Copper Ltd., Khetri,
Rajasthan.
4.
F/NC Processing of limestone sample from Rampllra-Ballupura limestone Mine
of M/s Lucky Minmet Pvt. Ltd., district sikar , Rajasthan.
5.
F/NC Beneficiation of copper sample (mixed) from Devtalai Multimetal Deposit,
Kotri, district Bhilwara, Rajasthan for MECL .
6.
F/NC Beneficiation of copper sample (drill core) from Devtalai Multimetal
Deposit, Kotri, district Bhilwara, Rajasthan(for MECL)
7.
F/NC
Beneficiation of copper sample (fines) from Devtalai Multimetal Deposit,
Kotri,
district Bhilwara, Rajasthan, (for MECL)
8
F/NC
Beneficiation of a oxidized lead-zinc ore (gossan) sample f rom RampuraAgucha Mines of M/s Hindustan Zinc Ltd, district Bhilwara, Rajasthan.
9.
F/NC
Beneficiation of Bulk copper sample from Bhagal Mines, Rajasthan for
MECL.
10. F/NC
Beneficiation of limestone sample from Amli limestone mines of M/s
Binani Cement Ltd. (For RCOM, Ajmer).
11. F/NC
Beneficiation of limestone sample from Morak limestone mines of M/s
Mangalam Cement Ltd., district Kota, Rajasthan.
3.
Proposed field programme for the year 2004-2005.
A. MCDR Inspections
In all 100 mines will be inspected by the officers of Udaipur regional office in 5
districts of Rajasthan for enforcement of MCDR 1988.
Similarly 155 mines in districts of Rajasthan will be inspected by the officer of Ajmer
regional office. The mine will be selected for inspection on following basis of priority.
(a) Open Cast //Underground mechanized mines.
(b) Lease expiring within a period of two years.
C) Non-reporting mines/mines not inspected for the last two years.
(d) Other category' A' & 'B' mines.
(e) Mining plan/Scheme inspections:
Areas/mines, for which mining plans/schemes will be submitted, will be taken for
inspection.
B. Geological studies
(a) No geological studies have been proposed for the annual programme for the year
2004-2005 for Udaipur Regional Office in the State of Rajasthan.
(b) Similarly during the year 2004-05 it has been proposed to inspect 41soapstone,
clay and quartz, feldspar & mica mines in the districts of Bhilwara and Bikaner
proposed for the annual programme for the year 2004-2005 for Ajmer Regional
office in the State of Rajasthan.
The outcome of these inspections will form part of a special study report. The
major thrust of these inspections will be on exploration already carried out and
further exploration required, mineral conservation and protection of environment
and community development in the individual lease holds and then bring out a
regional picture on the above aspects.
11.
GROUND WATER DEPARTMENT:
1.
PROGRESS OF WORK CARRIED OUT BY SURVEY AND RESEARCH
WING OF G.W.D. DUIRNG 2003-2004 (APRIL 2003 TO MARCH, 2004) :
1. Phvsical Task:
(Units in number)
Head
Annual Target
Achievement
Well Inventories
12605
15277
Non-
Water sample collection
11305
13230
Plan
Chemical Analysis
11210
12443
Geophysical soundings
1175
1294
Mircro
Well Inventories
Not fixed
38
level
Water sample collection
Not fixed
28
Not fixed
25
Well Inventories
12605
15315
Water sample collection
11305
13258
Chemical Analysis
11210
12458
Geophysical soundings
1175
1294
survey
Item
Chemical Analysis
Total
Details are enclosed at appendix 1 to 3
2
Ground Water Assessment as 0m.6.2004 :
Ground Water Assessment as on 1.6.2004 for all the districts as per guidelines of
National Level Ground Water Estimation committee (GEC) are under preparation by
the department.
3.
Construction of Roof-top Rainwater Harvesting Structure:
During the year department had prepared and submitted various proposals of Rooftop Rainwater Harvesting Structures in different Govt. building in Jaipur city and
other division headquarters. Out of which works of two structures in Jaipur city
have been sanctioned and they will be taken up in the year 2004-05.
4. Proposals for the Artificial Recharge Structure:
During the year department had prepared a Master Plan for Artificial Recharge to
ground water in the state wherein 299 sites spread in 27 districts were identified. The
Master Plan have been submitted to the Government for approval.
5. Activities under Ground Water component of Rajasthan Water Sector Restructuring
Project (RWSRP) during F.Y. 2003-04.
The activities under the project have mainly started during 2003-04. These are
broadly categorized under two groups, the first is strengthening of Ground Water
Department and second is Ground Water Management Pilot Project in which various
activities such as construction of piezometers in Pilot area, IEC, baseline survey,
formation of ground water management organisation etc. to be carried out.
Activities carried out in 2003-04 :
i.
Under publication and data dissemination, GIS software from NIIT has been
upgraded and installed. GIS data base development in 3 pilot project having
total cost approx. 22 lacs has been finalised and project of the developing
software for the three pilot areas have been awarded to the Regional Remote
Sensing Centre (RRSC), Jodhpur. Website of the department has been
developed. District wise bulletin on IEC have been prepared and are under
review.
ii.
In the strengthening of G.W.D. total
number
of
498 piezometers were
constructed in out side pilot areas in various districts of the State. (Annuxure 45).
iii.
In Ground Water Management Pilot Project a total number of 55 piezometes
were constructed in 3 pilot area i.e. Rajsamand, Sikar and Jodhpur districts. IEC
activities for creation of public awareness regarding conservation and judicious
use of water has been carried out by the technical support groups in Pilot areas.
Similarly 100% inventories of the wells located in the various villages of pilot
area were carried out and it will be completed in 2004-05.
iv.
Consultancies: The Department has taken action for engaging consultant for
social assessment and for community mobilization in all these 3 pilot areas and
in LE.C. for Ground Water Component. This component is under finalisation
and likely to be awarded in the next F.Y.
12.
METMIN FIANCE & HOLDING PRIVATE LIMITED :
INRODUCTION
Metmin Finance & Holdings P.Ltd., a
group company of Metdist group U.K. is
enagaged in grass root exploration in base metals since 1997 in Rajasthan . Metmin is
presently conducting integrated geological , geophysical , geochemical and follow up
test drilling in Deri – Pindwara block of Sirohi disrtrict along with field reconnaissance
and orientation ground surveys in other RP block . Metmin has been able to bring in
State – of – art geochemical and geophysical techniques with capabilities to test to a
depth of 400m having sigificant relevance especially in explorating for deep seated ore
bodies . Metmin utilized NGRI capabilities to carryout high resolution Aero-mag
surveys covering over 475 sq . Kms , within the block.
PROPERTY STATUS :
In Rajasthan Metmin has 2 RPs 1 in Sirohi dist., and another in Nagaur and Sikar
districts. The Pindwara – Watera – Deri block in Sirohi district the RP agreement was
executed in Dec 2001 over an area of 942.87 sq. kms. and for Marol – Palsana block in
Nagaur and Sikar district in Dec., 2002 over an area of 714.69 sq. kms.
Besides these Metmin had applied and secured RP blocks in Udaipurwati and
Baleshwar blocks which were transferred to a Joint venture company Phelps Dodge –
Metdist Mining India Pvt. Ltd.
DERI- PINDWARA BLOCK the details of work carried out since
commencement is as follows.
DETAILS OF WORK DONE SINCE COMMENCEMENT UP TO MARCH
2004:
Survey / Work Completed
COMPILATION
Operation Hardrock AEM ( 1973)
Geology (various regional GSI products )
GSI Fieldwork 1990-96 ( some products ), report on 1985-1990 work not Purchased
Mineral occurrence data for 7 sites from all available sources (Watera ,Pipela , Golia
,Rampura , Basantgarh , Ajari and Danva )
GEOPHYSICS – By Contractor
NGRI 2001 Aeromagnetic Surveys ( 476.4 square kilometers , 5747 line- kilometers)
Ground Geophysical Surveys
NGRI (mag and HLEM , Pipela grid ,2002 ) ( 4 square kilometers , 34 linekilometers);
Depth of penetration 40-50 meters
CRONE PEM ( Total area covered = 19.74 sq.km , 2002-2003 ) ; Depth of pentration
200-250 meters
21 surface surveys ; (21.6 sq. km , MP119.92 line km , 176 lines)
16 drill holes ( MG1-7 , MP 6, MP8,MP10,MP12,MP14-17,MP 19 ) 5292 m. surveyed
in 18 boreholes surveys.
Scintrex Mag Profiles , 2 line @ Golia
Magnetic Susptibility (soils ,outcrops , rocks,core)
GEOCHEMISTRY
Sold (4381 sites)
Orientation (48 profiles @50 m spacing , 623 sites)
500m grid sampling (2975 sites )(2000-2002)
500m grid sampling (7835 sites )(2001-2002)
50m grid sampling (783 sites )(2001-2002)Rocks
Surface Litho geochemical :327 samples (2002-2003)
Drilling Litho geochemical : 264 samples (2002-2003)
Drilling geochemical (Pipela 1966 samples (2002-2003))
(Golia 931 samples) (2002-2003)
MAPPING
Access roads , power transmission lines ,railways , pipelines Geology
Regional Exhalite horizon from Warera to Pindwara
Pipela Area – Detailed Geology
Folded Targets - Detailed Geology
Golia Area - Detailed Geology
Drilling
( Contractor ACC )
Pipela : 19 holes , 5612.7 m. (5501 m. core drilling ,111.7 m. persussion drilling)
2002: 17 drill holes , 5093.8 m (all core drilling )
2003: 2 drillholes ,518.9 m. ,(111.7 m. persussion drilling,407.2 core drilling )
Golia : 2 holes ,2108.35 meters. (1841.42 m. persussion drilling, 266.93 core drilling )
2003 :(Contractor Pashupati Nath ): 7 holes : 1652.42 m. persussion drilling.
2003: :(Contractor ACC ) : 2 new holes , 2 Pashupati Nath persussion holes deepened ;
(455.93 m. ), (266.93 m. core ,189.00 ) persussion drilling.
2004: mining Associated : 1 hole in Lakshmi Block 229.90m.
ANNUAL PROGRESS DURING 2003-2004 SURFACE
GEOPHYSICAL SURVES
The regional Pulse EM by using surface large loop Electro Magnetic technique
continued to cover the entire prospective horizon from Watera – Pindwara . The
boreholes EM technique was used to test ' in hole ' and ' off hole' sulphide
mineralisation by carrying out borehole surveys . Three well defined anomalies one
each in Pipela , Golia and Lakshmi blocks were selected for testing by diamond drilling
a total of 21 large loop surveys were carried out in addition to surveying 16 boreholes
Sintrex magnetometer profiles were surveyed along 2 lines in Golia block.
Routine magnetic susceptibility readings of soil, outcrop, rock samples and core
samples were measured by using MS meter.
DRILLING
Golia block : To test the strong conductive response obtained during PEM surveys in
the year 2002-2003, 7 persussion boreholes were drilled , which indicated well defined
wide zone of sulphide mineralisation with geochemically significant values fro copper .
To confirm the mineralisation and test for improved in core drilling , 2 core drilled
boreholes were taken up . These boreholes confirmed only the low grade copper
mineralisation (below 0.8 – 1.0%) the discontinued due to poor results.
Pipela block: Two core drilling boreholes were taken up one for testing the strong
conductive response obtained during PEM surveys and another to test a possible
structural anomaly. The boreholes drilled to test the PEM anomaly deviated abnormally
and failed to intersect the causitive body (VMS body) at the required depth. The other
borehole drilled to test the structural control did not yield any significant result.
Lakshmi block: One core drilling boreholes were taken up one for test the strong
conductive response obtained during PEM surveys. Howerver the borehole failed to
intersect any zone of significant mineralisation.
Following is the summary of work carried out in the year 2003-2004 ANNUAL
PROGRESS FOR THE YEAR 2003-2004
GEOPHYSICS :
Crone PEM: Area Covered
:
10.47 Sq.Kms.
No. of Loops
:
12 nos.
Boreholes Surveys
:
9 Boreholes
Scintrex Mag Profiles
:
2 line in Golia
:
55 samples
:
59 samples
Zn, Au & Ag
:
1067 samples
Golia:
2 BH Core drilling
:
266.93m.
Pipla:
2 BH Core drilling
:
518.9m.
Lakshmi:
1 BH Core drilling
:
229.9m.
Block.
GEOCHEMISTRY :
Rock :
Surface lithogeochemical
(whole rock analysis, 32 ,
Radials by ICP)
Drilling lithogeochemical
(32 radicals by ICP)
Drill geochemical for Cu, Pb
DRILLING:
Total drilling for 2003-2004
1015.73 m.
Marol – Palsana Block – The detailed reconnaissance field studies carried out in
the block have not confirmed the prospectivety of the block. Pending reworking of the
exploration strategy no physical inputs have been made in the block.
EXPLORATION EXPENDITURE :
Since commencement of exploration activities in early 1997,the total expenditure
incurred on exploration has been Rs. 12.5 crores in Deri – Pindwara block and Rs. 0.02
crores in Marol – Palsana block.
PROGRAMME FOR 2004-2005
One deep borehole to test strong EM anomaly in Pipela block is being taken up for core
drilling .
Further to review the accumulated data to decide on the future course of exploration
depending upon the results of drilling proposed in Pipela Block.
13.
M/S ANGLO AMERICAN EXPLORATION ( INDIA ) PVT.LTD.:
4 RP blocks totaling 1754.56 sq. km have been granted to Anglo Americian
Exploration (I) Pvt. Ltd. in Rajasthan so far. 2 RP's (Agucha and Asind) were executed
in July 2002. Both the blocks fall in Bhilwara district and have been granted for
exploration of copper, lead, zinc, silver, gold and associated minerals.
2 more RP's (Khandela and Ajmer) were executed in August 2003. Khandela block fall
in Sikar district and Ajmer block falls in Ajmer district and have been granted for
explotation of copper, lead, zinc, silver, gold and associated minerals .Exploration
activities in these two blocks are currently in progress.
The details of RP's are shown below.
S.No RP
District
Block
Date
Area held Expendi Total
Executed
(sq.km)
ture
Expendi
(April
ture till
Status
o3 to 51 March
March
2004
,04 )* ( (Rs,In
Rs.
in lakhs )
lakhs)
1.
Agu-
Bhilwara
8 July ,02
453.00
78.54
153.31
cha
2.
Asind
Workin
pro-gress.
Bhilwara
8 July ,02
460.75
8.70
57.32
Work
nearly
completed
3.
Khan
Sikar
21,Aug,03
435.20
52.80
52.80
dela
4.
Ajmer Ajmer
Workin
pro-gress.
21,Aug,03
405.61
7.31
7.34
Workin
pro-gress.
1754.56
147.35
*Expenditure figures are provisional as at 31 March 2004.
270.74
Since these areas were previously explored using airbone geophysical data, Anglo
American has no plants to conduct aerial surveys. Emphasis is being laid on other high
– resolution ground – based exploration methods including regional soil geochemical
surveys.
Exploration work completed till March 2004 and future exploration programme
in the four RPs held by us have been outlined below.
1.
RP No. 7/2001 – 453.00 sq. km in Bhilwara (Agucha block )
- Area executed on 8 July, 02 and exploration activities in progress.
-Detailed ground magnetic survey at 100 m-line spacing over the entire block
(total 5200 line km of data) has already been completed. The data has much
higher resolution than all previous aeromagnetic surveys over the area is being
extensively used for interpreting geology and structure under cover.
- Entire Rp area was initially covered with regional soil survey at 1000m x
200m grid (total 2436 samples). Results led to interpretation of 47 soil
anomalies. Based on site visits and mapping four anomalies have been selected
for further work in the first pass. Infill soil sampling at 200m x 50 m grid has
also been completed at these four anomalies. Results identified two anomalies
for drilling.
- Regional geological and structural mapping around Agucha deposit
completed.
- Deep- penertrating ground electromagnetic survey over soil anomalies and
other intersting target areas was done to look for deeper conductors. Ground EM
failed to identify any deeper conductor.
- Interpretation of all data sets identified drill targets in two of the anomalies
and both the anomalies has been drilled but failed to intersect any significant
base metal mineralisation. Two anomalies (Urja ka khera and Sareri) were drill
tested by 8 persussion holes with 1758 m of drilling .Geochemical results are
discouraging and no further work is required on these anomalies.
Status of work done from April 2003 to March 2004 in Rp's granted:
- Deep- penertrating ground electromagnetic survey over soil anomalies and
other intersting target areas was done to look for deeper conductors. Ground EM
failed to identify any deeper conductor.
- Interpretation of all data sets identified drill targets in two of the anomalies
and both the anomalies has been drilled but failed to intersect any significant
base metal mineralisation . Two anomalies (Urja ka khera and Sareri) were drill
tested by 8 persussion holes with 1758 m of drilling .Geochemical results are
discouraging and no further work is required on these anomalies.
-Geological map of the RP was improved as new data information was gathered during
regional geological traversing.
Future plan of work:
-
Drill testing of geophysical target BHL-35 by Percussion drilling.
-
Data compilation and review geochemical, geological and geophysical datasets
to identify any possible targets, which remained, untested.
-
Relinquishment (partly) of the RP block.
The exploration work is currently in progress. The financial expenditure in Agucha RP
block till end of March 2004 is Rs. 153.31 Lakhs.
2
RP No. 5/2001 - 460.75 so km in Bhilwara (Asind block)
-
Area executed on 8 July 2002 and exploration activities nearly completed.
-
Detailed ground magnetic survey at 200m-line spacing over the entire block
(total 2450 line km of data) has already been completed.
-
Entire RP area was covered with regional soils at 1000 m x 200 n1 grid (total 2505
samples). Results are disappointing with only 3 low priority anomalies identified.
-
Data interpretation and anomaly follow up has failed to identify any drill targets.
Status of work done from April 2003 to March 2004 in RP's granted
-
Geological mapping and rock chip sampling.
-
Data interpretation of geological, geochemical and geophysical datasets failed
to identify any target area for further work.
Future plan of work:
-
Exploration activities completed and entire RP area to be relinquished.
The exploration work is near completion. The financial expenditure in Asind RP till
end of March 2004 is Rs. 57.32 lakhs.
3. RP No. 4/2001 - 435.20 so km in Sikar district (Khandela block)
As the RP was executed in August 2003 so all the work that has been done on this RP is
during August 2003 to March 2004.
-
Area executed on 21st August 2003 and exploration activities in progress.
-
Detailed ground magnetic survey at 200m-line spacing over most of the
tenement block (total 2478 line km of data) has already been completed.
-
Entire RP area covered with regional soils at 1000m x 200m grid (total 2341
samples). Results led to interpretation of 17 soil anomalies.
-
Anomaly follow up including rock sampling and ground EM surveys is in
progress.
-
Interpretation of all data sets identified drill targets in two of the anomaly areas
(KHGI9 & KHG23).
Future plan of work:
-
Ground EM surveys at priority target areas.
-
Data compilation and planning drill collars for Percussion drilling.
-
Drill testing of the target areas.
The exploration work is currently in progress. The financial expenditure in Khandela
RP till end of March 2004 is Rs. 52.80 lakhs.
4. RP No. 3/2001 - 405.61 sq km in Ajmer district (Ajmer block)
As the RP was executed in August 2003 so all the work that has been done on this RP is
during August 2003 to March 2004.
-
Area executed on 21st August 2003 and exploration activities in progress.
-
Detailed ground magnetic survey at 200m-line spacing over most of the
tenement block (total 2127 line km of data) has already been completed.
-
Regional geological and structural mapping in RP block is in progress.
Future plan of work:
-
Regional geological and structural mapping in RP block.
-
Follow up with geochemical and geophysical surveys if priority areas are
identified in geological and structural interpretation.
The exploration work is currently in progress. The financial expenditure in Ajmer RP
till end of March 2004 is Rs. 7.31 lakhs.
Besides these RP's which have been granted to AAEIPL; there are 5 more RP's that are
pending with the Government. These 5 RP's include Shahpura (RP-4/2002 covering
2216 sq km area), Kekri (RP-6/2002 covering 2318 sq km area), Kakrana (RP-5/2002
covering 730 sq km area), Kayar (RP-1/2003 covering 2045 sq km area) and
Rupangarh (RP-2/2002 covering 1180 sq km).
14. M/s INGLEWOOD MINERALS PVT. LTD.:
Inglewood Minerals Pvt. Ltd. held five large area PLs (see table below) in Rajasthan
totaling 9259 sq km during 2000-2002 for exploration of copper, lead, zinc, silver, gold
and associated minerals. Exploration work has been completed in all these PL blocks.
Since no mineralization of interest was found, the PLs were surrendered during 2002.
S.
PL
No. No
District
Date
PL area
Total
Executed
(sq km)
EpenditUl'e
Rs.
134.3
1
74/99 Udaipur
6 Jan 2000
1777.25
2
75/99 Udaipur
6 Jan 2000
1722.75
Rs. 192.9 lakhs
3
76/99 Udaipur
6 Jan 2000
2082.00
Rs.1131.8 lakhs
4
24/99 Rajsamand 10 Mar 2000 2085.00
Rs. 192.4 lakhs
5
25/99 Rajsamand 10 Mar 2000 1592.00
Rs. 98.8 lakhs
Total
9259.00
lakhs
Rs.
Status
Surrendered in
2002
Surrendered in
2002
Surrendered in
2002
Surrendered in
2002
Surrendered
2002
1750.2
lakhs
Exploration work completed since the beginning and total expenditure incurred in each
PL till the close of prospecting operations is outlined below.
1. PL No. 74/99 - 1777.25 sq km (Udaipur) - IMPL Block - 11
-
Aeromagnetic survey at 400m line spacing over the entire block (total 6505 line
km data) - only 3 low priority magnetic anomalies identified.
-
Area covered mostly with regional stream sediment sampling with a density of
1 sample per 10 sq km of drainage area (132 samples) and partly with regional soil
sampling at 2000m x 400m (97 samples) - 9 stream sediment anomalies identified.
-
Some anomalies falling within Reserve Forests and Wildlife Sanctuary could
not be followed up. Remaining anomalies were followed up with denser stream
sediment sampling and close-spaced soil sampling. Tulla (Kathar) area was detectecl as
the most interesting lead anomaly in this block.
-
3 percussion drill holes (7.52m) were drilled into previously untested areas at
Tulla. The results are not encouraging.
-
All proposed prospecting work was completed and operations closed in Dec
2002.
A total financial expenditure of Rs.l.343 crores was incurred in this PL.
2. PL No. 75/99 - 1722.75 sq km (Udaipur) - IMPL Block - III
-
Aeromagnetic survey at 400m line spacing over the entire block. (total 6648 line
km data) - 14 low priority magnetic anomalies identified.
-
Regional stream sediment sampling (231 samples @ 1 sample per 10 sq
km of drainage area) and regional soil sampling (1586 soils @ 2000m x
400m grid) completed over the entire area. A total of 16 soil anomalies
were identified.
-
10 drainages were found anomalous which were followed up by denser stream
sediment sampling (107 samples @ 1 sample per 1 sq km drainage area) and a
few other places with infill soil sampling (878 samples).
-
2 percussion holes (350m) were drilled into the most interesting zinc anomaly in
Sukher area. Results were discouraging.
-
All proposed prospecting work was completed and operations closed in Dec
2002.
A total financial expenditure of Rs. 1.929 crores was incurred in this PL.
3. PL No. 76/99 – 2082.00 sq km (Udaipur) – IMPL Block – IV
-
Close-spaced aeromagnetic survey at 200m line spacing over the entire block
(total 11464 line km data) - 56 magnetic anomalies identified. Detailed
mapping," rock chip sampling and soil sampling were carried out to follow up
of the magnetic anomalies.
-
Regional soil sampling (8256 soils @ 1000m x 200m grid) was initially
completed over the entire area leading to identification of 56 geochemical
anomalies (zinc +/- lead). The interesting anomalous areas were further in filled
with 5852 samples @ 250m x 50m grid. However, only Hinta (near Blunder)
and Anjanikhera (near Fatehnagar) were found to be most in1portant
geochemical anomalies outside Rajpura-Dariba lead-zinc belt.
-
Phase-l drilling (2224m of percussion drilling in 13 holes) was drilled at Hinta
and Anjanikhera. Only low-grade mineralizations over narrow widths were
intersected. Best results are: 0) 24m along borehole with 1.94% zinc and 1.66%
lead (8n1 of which was 2.12% zinc and 3.49% lead) in one hole at Hinta and
(11) 6m along borehole with 2.66% zinc and 1.21 % lead in one hole at
Anjanikhera.
-
Ground magnetic, electromagnetic and gravity surveys were completed in
the Bhinder-Hinta-Akola and Anjanikhera areas. The results were followed
up with further drilling in Phase-Il to prove the strike and depth continuity.
Mineralisation was found to continue, but grades were only in 1-2 %
lead+zinc range.
-
In Phase-11 (4057m of percussion drilling in 20 holes), besides Hinta and
Anjanikhera, other targets drilled were Kedariya, Gariwas, Blunder, Kir ki
Chourah (all in Akola-Bhinder belt), Bhopalsagar, Rashmi and Gilund areas.
None of these came with any positive results.
-
Rajpura-Dariba belt was followed up separately with detailed ground
magnetic and gravity surveys. Interesting targets were covered by
electromagnetic surveys. Phase-III drilling comprising of 8111m of
percussion drilling in 38 holes (5 with diamond tails -872 m) was carried out
into various types of targets in this belt. Drilling failed to intersect any
mineralization of significance.
-
All proposed exploration work was completed and operations closed in Dec
2002.
A total financial expenditure of Rs. 11.318 crores was incurred in this PL.
4. PL No. 24/99 - 2085.00 sq km (Raisamand)-IMPL Block-V:
-
Aeromagnetic survey at 400m-line spacing over the entire block (total 6370 line
km data) - 11 low priority magnetic anomalies identified.
-
Most of the area covered with regional soil sampling at 2000m x 400m (3187
samples) and western part of the area was covered with regional stream
sediment sampling with a density of 1 sample per 10 sq km of drainage area
(10 samples) - 32 soil anomalies and 2 stream sediment anomalies were
identified.
-
Some of these anomalous areas were followed up with close spaced soil
sampling (461 samples).
Most of the anomalies were downgraded for further work. One area (near
Rajsamand ) was covered with ground electromagnetic survey, but it failed to
identify any conductor.
All proposed prospecting work was completed and operations closed in Dec
2002.
A total financial expenditure of Rs. 1.924 crores was incurred in this PL.
5. PL No. 25/99 - 1592.00 sq.km (Raisamand)- IMPL Block - 1
-
Aeromagnetic survey at 400m-line spacing over the entire block (total 5380 line
km data) - 8 low priority magnetic anomalies identified.
-
226 regional soil samples at 2000m x 400m grid and 21 stream sediment
samples at 1 sample per 10 sq km of drainage area were collected to cover this
area of lowest priority among all PL blocks.
-
A total of 5 soil anomalies and 8 anomalous drainages were identified. These
were followed up with 227 closed-spaced soils and 19 denser stream sediment
samples (1 sample per 1 sq km of drainage).
-
All the anomalies were downgraded for further work based on, these results.
-
All proposed prospecting work was completed and operations closed in Feb
2002.
A total financial expenditure of Rs. 0.988 crores was incurred in this PL.
15. M/s PHELPS DODGE:
Phelps Dodge had formed a JV company, Phelps Dodge – Metdist Mining India
Private Limited (PD-M) with Hon. Lord Bagri's Metdist me. Of London, UK,
for all exploration programs in Rajasthan under two large area Prospecting
Licences (PL's) granted during May/June, 1999, and three Reconnaissance
Permits (RP's) sanctioned subsequently. While the PL's expired after the
stipulated three year period, the RP's were surrendered on completion of the
programs prior to their expiry dates. The data generated and the results obtained
have been Compiled in final technical reports which have already been
submitted to the Director, Mines & Geology, Rajasthan, as well as, to the Indian
Bureau of Mines with an additional copy for the Geological Survey of India.
These reports are confidential for periods as defined in the MM (0 & R)
Act, 1960 and MCR, 1960.
MINERAL EXPLORATION CORPORATION LIMITED
( A Govt. of India Enterprise )
CENTRAL ZONE, UTIIJI1Y COMPLEX ,SEMIINARY HILLS, NAGPUR(MS)
38TH MEETING OF THE STATE GEOLOGICAL PROGRAMMING BOARD
RAJASTHAN
During the year 2003-.04, MECL carried out exploration activity in the state of
Rajasthan for lignite and base metals. Exploration was carried out for lignite in Barmer
& Bikaner sectors and for Copper in Bhagal (Chittorgarh distect) and multimetal
deposit in Devtali (Bhilwara district) blocks. After completion of regional exploration
for lignite in Hodu block on 31.03.03 the resources were shifted to Nimbalkot
Nimbalkot North block and Nagurda block. Tne exploration in Shiv, Nimbalkot and
Nimbalkot North blocks have been completed during 2003-04 in Barmer sector, In
Bikaner sector, exploration was completed in Riri block in March'04. Two boreholes
were drilled in Bapeu block (Riri..Palana area) during Feb -March 2004, which gave
encouraging results of lignite oocurrence in the west of Riri block.
In addition to above MECL is also carried out Sueface Geophysica1 Survey in
Jasrasar Block, (Bikaner sector) and Chawa block (Barmer sector) during the year
2003-04.
The block-wise and mineral-wise achievements of MECL in Rajasthan Area
during 2003-04) are given below.
A) LIGNITE:
MECL carried out Surface Geophysical Survey in Jasrasar
Blocks under promotional work on behalf of Mininstry of Coal, Govt. of India .The
block wise details are as follows
1.
BARMER SECTOR
1.
HODU BLOCK:
LOCATION
Situated at 15 Km. West of Sinndari
village and55 km. from Barmer Town
Topsheet No. 40-O/10,O/14,
Latitude : 25º33'13"-25º33'41"
Longitude : 70º 43'42" – 71º48'91"
Area
25 Sq.km
Client
MOC,Govt of India
Commenced on
12.05.2000.
Status
Exploration completed on 31.03.2003
Exploratory drilling during 2003-2004
Nil
Geophysical logging during 2003-2004
Nil
Cumulative drilling since commencement
15,300.00 m.
Cumulative Geophysical logging
15,257.00 m.
No.of lignite horizons
3
Cumulative thickness range
12.00m.-322.00m
Depth range of Depth range of lignite
123.40 m. -322.00 m.
Average CV of lignite
300 K.Cal ./kg
GR submitted
January 2004
2.
SHIV GRAVITY BLOCK :
LOCATION
Located at 55 Km. NNW of Barmer
town
Topsheet No. 40-N/7,N/8,
Latitude : 26º07'-26º24'
Longitude : 71º 05' – 71º18'
Area
Scout Drilling
Client
MOC,Govt of India
Commenced on
07.12.2002
Completed on
15.4.2003
Exploratory drilling during 2003-2004
235.00 m.
Geophysical logging during 2003-2004
1009.00 m
Cumulative drilling since commencement
5553.00 m.( 20 Bhs.)
Cumulative Geophysical logging
5453.00 m..( 20 Bhs.)
No .of lignite horizons
Nil
Cumulative thickness range
Nil
Depth range of Depth range of lignite
Nil
Average CV of lignite
Nil
GR submitted
October 2004
3. NAGURDA BLOCK .
LOCATION
Located at Nagarda & Jora Nada
village at 45 Km. North Barmer Town
Topsheet No. 40-N/7,N/8,
Latitude : 26º07'31"-26º12'47"
Longitude : 71º 19'34" – 71º25'31"
Area
50 Sq.km
Client
MOC,Govt of India
Commenced on
April , 2001
Status
Work in progress
Exploratory drilling during 2003-2004
8165.70 m.
Geophysical logging during 2003-2004
5214.00 m.
Cumulative drilling since commencement
12786.70m.
Cumulative Geophysical logging
12551.80 m.
No.of lignite horizons
2-4
Cumulative thickness range
1.50m.-13.00m
Depth range of Depth range of lignite
60.00 m. -281.00 m.
Average CV of lignite
> 2500 K.Cal ./kg
4.
NIMBALKOT BLOCK
LOCATION
7.5 Km. West of Hodu,village about 35
km. South –east of
Barmer Town
Topsheet No. 40-O/10,O/14,(1:50,000
RF)
Latitude : 25º33'51"-25º40'21"
Longitude : 71º 42'25" – 71º45'44"
Area
40 Sq.km
Client
MOC,Govt of India
Commenced on
12.07.03.
Status
Exploration completed on 6.1.04.
Exploratory drilling during 2003-2004
9982.00 m.
Geophysical logging during 2003-2004
9866.00 m.
Cumulative drilling since commencement
9982.00 m.
Cumulative Geophysical logging
9866.00 m.
No.of lignite horizons
1 to 10
Cumulative thickness range
1.40 m.to-12.00m
Depth range of Depth range of lignite
51.60 m. to 303.00 m.
Average CV of lignite
2800 K.Cal ./kg
Status of Report
Under preparation
5.
NUMBALKOT NORTH BLOCK :
LOCATION
13 Km. North of Hodu village , about
35 km. east of Barmer Town
Topsheet No. 40-O/10,O/14, ,(1:50,000
RF)
Latitude : 25º42'23"-25º44'37"
Longitude : 71º 42'59" – 71º48'34"
Area
35 Sq.km
Client
MOC,Govt of India
Commenced on
29.1.04
Status
Running
Exploratory drilling during 2002-2003
4838.90 m. (56 Bhs.)
Geophysical logging during 2002-2003
4009.00 m
Cumulative drilling since commencement
4838.000 m.
Cumulative Geophysical logging
4009.00 m.
No.of lignite horizons
1 to 5
Cumulative thickness range
0.70 m.-8.00 m.
Depth range of Depth range of lignite
110 m. to 304 m.
Average CV of lignite
2800 K.Cal ./kg
II
BIKANER SECTOR
1.
RIBI BLOCK :
LOCATION
Located 30 Km. South of Badhnu
village
Topsheet No. 45-I/1,E/13
Latitude : 27º52'40"-27º56'34"
Longitude : 73º 56'34" – 74º04'23"
Area
35 Sq.km
Client
MOC,Govt of India
Commenced on
07.08.2002
Status
Regional
Exploration
completed/concluded in March ' 04
Exploratory drilling during 2002-2003
9473.50 m. (56 Bhs.)
2003-2004
11512.50 m. (74Bhs.)
Geophysical logging during 2002-2003
2003-2004
9301.50 m(56 Bhs.)
11612.50 m. (74Bhs.)
Cumulative drilling since commencement
20986.00
Cumulative Geophysical logging
20950.00
No.of lignite horizons
1
Cumulative thickness range
0.80 m.-168.00 m.
Depth range of Depth range of lignite
96.00 -168.00 m.
Average CV of lignite
2174 K.Cal ./kg
" Riri blocks" is located near Riri – Kalyansara naya village in Bikaner / Churu district .
As per the available data , 79 Nos. of boreholes have shown development of lignite /
Ical in one thick horizon with 3 to 4 carboneceous clay bands . The average thickness
horizon of lignite horizon varies from 0.80 m. to 54.00 m. which is second thickest
horizon so far intersected in Bikaner sector after Gurha East Block. The lignite
intersection depth is boreholes drilled so far the lignite to over burden ratio ( Lig : OB )
is varying from 1 :2 to 1 :64 . Tentative estimation of resources have indicated
potentiality of 272 million tonnes of gross geological resources in area (explored on
800x800 m. grid interval ) out of this 237 million tonnes of (87%) of reserves are
falling within 1 : 15 , Lig : OB ratio limit with an average CV of 2174 K. Cal /Kg .
covering about 13 Sq. Km . area.
LOCATION
located
10
Km.
southwest
of
Kalyansar Naya village , 65 of Hodu
village , about 35 km. east of Bikaner.
Topsheet No. 40-O/10,O/14, ,(1:50,000
RF)
Latitude : 27º50'49"-27º56'05"
Longitude : 73º 53'12" – 73º58'16"
Area
40 Sq.km
Client
MOC,Govt of India
Commenced on
19.03.2004
Status
Two boreholes were drilled in the year
2003-04. A total of 6000 m. of drilling in
30 Bhs. is proposed in this block for
2003-04,2004 -05 and 2005-06
Exploratory drilling during 2002-2003
284.00 m.
Geophysical logging during 2002-2003
284.00 m
Cumulative drilling since commencement
284.00 m.
Cumulative Geophysical logging
284.00 m.
No.of lignite horizons
1
Cumulative thickness range
5.00 m.
Depth range of Depth range of lignite
103.80 m.-112.40.
Average CV of lignite
Low quality lignite (I.cal)
Out of two boreholes drilled in this block , one borehole has intersected two lignite
horizons of 2.20 m. and thickness within 120 m. depth.
B.
SURFACE GEOPHYSICAL SURVEY ( Gravity Survey )
1.
Shiv & Shiv . Extension block , Barmer Sector – Total 7,287 stations have
been covered in 318.12 Sq. Km area during 2003-04. Thus a cumulative 15240 station
have been covered in 60960 Sq. Km . area in the block.
2.
Chava block, Barmer Sector- Geophysical survey including 51666 have been
covered in an area of 206.64 Sq. Km in Chava block during 2003-04 to find anomalies
for lignite occurrence .
3.
Jasrasar block , Bikaner sector - Geophysical survey including 3078 station
have been covered in an area of 123.12 Sq. Km in Jasrasar block during 2003-04 to
find anomalies for lignite occurrence .
C.
COPPER AND MULTIMETAL DEPOSITS
1.
DEVTALAL BLOCK ( BHILEARA DIST.)
( MULTI METAL DEPOSIT )
LOCATION
Located
45
Km.
Nouthwest
of
Bhilwara distt.
Topsheet No. 45-O/3
Latitude : 25º27'58"-25º28'38"
Longitude : 75º01'21" – 75º01'53"
Area
1.00 Sq.km
Client
MOM,Govt of India
Commenced on
1st Febuary 2003
Status
Exploration completed on 18.6.03
Exploratory drilling during 2002-2003
1038.10 m.
Cumulative drilling since commencement
1700 m.in 18 Bhs
GR submission
November 2003.
CONCLUSION AND RECOMMENDATIONS
The exploration carried out in Devtalai block have resulted in proving mineralisation
upto + 260 MRL . The ore reserves estimated are of the order of 1.96 million tonnes
with 1.06 % of copper at 0.2% Cu. off. Gold is also associated with the ore zones which
can be recovered as byproduct . The total gold resources are of the order of 722 Kg .
Benefication studies conducted on a copper sampled from the deposit yielded a
concentrate assaying 21.74 % copper with 90.4 % recovery
which is very
encouraging.
The exploration carried out in block has established the presence of two copper bearing
lodes hosted by quartz veins. The lodes, by and large, have been lodes at deeper levels.
The gold values found to be associated with the ore zones are encouraging. In order to
augment the copper ore reserves, it is recommended to prove the ore body for deeper
levels i.e. +160 MRL and 210 MRL as second phase work in Devtali Multimetal
deposits. The Phase –II exploration programme involving 2500 of drilling with
associated geological and laboratory work to meet the above objectives has recently
been approved in the 10st SCPP meeting held at New Delhi on 17.10.2003 for which
financial concurrence is awaited .
2.
BHAGAL COPPER DEPOSIT (DISTT. CHITTORGARH)
LOCATION
Located
45
Km.
Nouthwest
of
Bhilwara distt.
Topsheet No. 45-L/2
Latitude : 24º40'30"-24º41'16"
Longitude : 74º11'17" – 74º12'03"
Area
1.00 Sq.km
Client
MOM,Govt of India
Commenced on
24th January 2003
Status
completed on 20.8.03
Exploratory drilling during 2002-2003
1486.25 m.
Cumulative drilling since commencement
2037.00m .in 17 Bhs
GR submission
February 2003.
CONCLUSION AND RECOMMENDATIONS
The exploration carried out in Bhagal block have resulted in proving mineralisation
upto + 300 MRL. The ore reserves estimated are of the order of 5.53 million tonnes
with 1.06 % of copper at 0.5% Cu. off. Molybdenum and Bismuth are also associated
with the ore zones which can be recovered as by product. The total gold resources are
of the order of 722 Kg. Beneficiation studies conducted on a copper sample from the
deposit yielded a concentrate assaying 23.25 % copper with 76 % recovery which is
very encouraging.
The exploration carried out in block has established the presence of marginal grade
copper bearing lodes hosted by metasoda rhyolite, garnetiferous micaschist and
metalvolcanics . The lodes, by and large, have been lodes at deeper levels. In order to
augment the copper ore reserves and to increase the confidence level of the reserves, it
is recommended to prove the ore body for deeper levels i.e. +300 MRL and 250 MRL
as second phase work in Bhagal copper deposits.
The Wri- Bhupal Sagar- Akola- Bhagal- Bhinder linement , Udaipur – Chittorgarh
districts, Rajasthan hosts a number of small copper prospects which could be examined
for cluster mining . Noteworthy amongst such copper prospects are Dariba (Akola)
having 3.28 million tonnes x 0.83 % Cu. and Bhagal 5.53 million tonnes x 0.76 % Cu ,
it is envisaged that other such promising prospects along the belt may also contribute
medium grade copper deposit which need to be evaluated by detailed exploration .
PROPOSED FIELD L PROFRAMME FOR THE YEAR 2004-05
( AS PER MOC & MOM )
MOC WORK
A)
Lignite :
1. Barmer Sector:
19,000 m. of Exploratory drilling in Chawa , Munabao,
Nagurda East and
2. Bikaner Sector:
Sanchore
14,500 m. of Exploratory drilling in Bigga
Abhaysingpura , Sri Dungargarh and Bapeu block ( Riri
Palana area).
200 Sq. km in Chawa north block , Barmer sector 100 Sq.
km in Jasrasar and west of Jasrasar block.
B)
Surface gravity :
survey
C)
Hydrogeological:
Nimbalkot North block.
Studies
Physico-mechinacal: 1 BH – Munabao block
Test
2BH – Sanchore basin
1 BH- Bigga Abhaysingpura block
1 BH – Sri Dungargarh block
2 BH - Bapeu block
D)
E)
Environmental
Studies
1. Sanchore basin
2. Bigga Abhaysingpura block
3. Sri Dungargarh block
MOM WORK
Bhagal Cu Phase – II Kalabar , Zn , Dholamala Cu approved by Tech Sub – Committee
on 29.4.004 and put up to forthcoming SCPP for approval.