A
Preliminary
Mineral-Resource
Potential
Of
Northwestern
NewMexico: Introduction
McLemore and others
New
Mexico
Bureau of Mines
and Mineral
Open-file Report 228
Resources
December 1986
Prepared in cooperation with
United States Department of Interior
Bureau of Land Management
PREFACE
During
Management
the
spring 1985,
of
the U.S. Bureau of Land
(BLM)
and
the
New
Mexico
Bureau
of
Mines
and
Mineral
Resources (NMBMMR) entered
a cooperative agreementto pepare a
preliminary
mineral-resource
inventory
and
assessment
of
northwestern New Mexico, including Valencia, Cibola, McKinley,
San Juan, and western Rio Arriba Counties. This is the first of
six
reports
describing
the
geology
and
mineral-resource
potential
of northwestern New Mexico. This first report is divided into
two parts. Part I describes the methodology and classification
I1
involved in evaluating the mineral-resource potential. Part
is
an
executive
summary
of
the
mineral
resource
potential
of
eac
county. The preceding five reports, Open-file Reports
229-233
are
detailed
reports
of
the
mineral-resource
potential
of
each
county.
These
available
reports
data,
are
based
published
upon
and
time-consuming
unpublished,a group
by
analyses
of
all
of
geologists and technical support staff. Without this team effort
this project would be impossible.
In addition to the coauthors
of
the
final
report,
provided
assistance,
detailed
in
the
many
other
especially
people
in
of each
acknowledgments
i
at
the
NMBMMR
reviewing
the
rough
report.
and
drafts
BLM
as
TABLE OF CONTENTS
PART I
- Methodology
(by Virginia T. McLemore)
Introduction
1
Purpose and scope
Organization
of
1
present
study
3
Definitions
13
Numbering system
14
Evaluation
process
16
Introduction
16
Assessment
16
procedures
Classification of mineral-resource
potential
20
. . ~.. ,
Part I1
-
Summary of the mineral-resource potential
(by VirginiaT. McLemore and others)
Valencia
County
26
27
Cibola County
33
McKinley
39
San
County
JuanCounty
Western Rio Arriba
45
County
52
References
58
ii
TABLES
1
-
2
-
3
-
1:1000,000-scale maps included in mineral-resource
potential of northwestern New Mexico
5-12
Bibliographies and geologic map'.indices
Summary
County
of
4 .- Summary
County
of
5
6
-
mineral-resource
potential
in
Valencia
31
mineral-resource
potential
in
Cibola
37
Summary of mineral-resource
County
potential
Summary of mineral-resource
County
potential
7 - Summary of mineral-resource
Rio
18
Arriba
in
McKinley
43
in
San
Juan
49
potentialin
western
County
56
FIGURES
1
2
-
Areas assessed by
Mineral Resources
New
Mexico
Bureau
of Mines
and
2
Index to1:100,000 scale topographic maps covering
northwestern New Mexico
3
-
Numbering
4
-
Classification~of
mineral
5
-
Classification.of
mineral-resource
system
used
in
iii
this
report
resources
potential
4
15
21
22
Part I
Methodology of Assessing
Mineral-Resource Potential
(by Virginia T. McLemore)
INTRODUCTION
Purpose and Scope
The
charges
Federal
Land
Policy
and
Management
Act
(FLPMA)
1976 of
theU.S. Bureau of Land Management
(BLM) with
responsibility
for
assessment
mineral-resource
of
preparing
a mineral-resource
potential
inventory
for
all
of
and
the
public
lands they manage. These studies are essential
to land-use
planning
and
management
and
they
are
BLM
requiredto prior
actions such as disposal, withdrawal, exchange, conveyance of
land, or wilderness designations. In order to meet this
statutory
BLM and
the
requirement,
the
New
Mexico
Bureau
of
Mines
and Mineral Resources(NMBMMR) entered a cooperative agreement to
prepare a preliminary
for
northwestern
mineral-resource
New
Mexico,
inventory
including
and
Valencia,
assessment
Cibola,
McKinley, San Juan, and western Rio Arriba Counties1).(Fig.
NMBMMR
staff
geologic
were
studies
Mexico, so the
already
of
actively
various
involved
commodities
requirementsof both
on
agencies
with
all
were
compilations
lands
within
and
New
satisfied.
McLemore (1984) and McLemore et al. (1984) previously evaluated
the
mineral-resource
and
Bernalillo
potential
Counties
and
of
Torrance
adjacent
County
parts
of McKinley,
and
Sandoval
Cibola,
and Santa Fe Counties (Fig. 1).
This
is
based
preliminary
on
analysis
mineral-resource
of
available
geological, geochemical,geophysical, and
inventory
and
published
and
economic
data
assessment
unpublished
and
brief
field reconnaissance. A more rigorous and complete analysis of
all
available
information
1
and
additional
field
work
could
expand
+
t
Figure I
+
-
A r e a sa s s e s s e d
by N e wM e x i c oB u r e a u
o f M i n e sa n dM i . n e r a IR e s o u r c e s
+
the
preliminary
conclusions
of
this
organization of Present
The
present
study
paper.
study
involves
a mineral-resource
assessment
of
Valencia, Cibola, McKinley, San Juan, and western Rio Arriba
Counties and is divided into six reports; an introduction (this
:
report) and five detailed assessments for each county 1
(Fig.
McLemore et al., 1986a, b,
c,
maps
ata scale
d,e).
of1:100,000 is
However, only one set
of
included
even
though
1:100,000-
scale maps may cover more than one county 2).
(Fig.
Table 1
lists
the
oversized
maps.
This introductory report is divided into two parts. IPart
describes
the
methodology
and
classification
of mineral-resource
potential. Part I1 is an executive summary
of the mineralresource
potential
of
each
county.
Each detailed county assessment (McLemore et al., 1986a,
b,
and
c, d, e) includes a text, appendices, and supporting figures
tables. The text includesa discussion of geology, production,
known
mineral
occurrences
and
deposit
types,
and
the
mineral-
resource and development potential
for each commodity. Mineral
occurrences
and
the
mineral-resource
potential
are
plotted
on
1) and summarized on page-size
1:100,000-scale maps (Table
figures. Mineral occurrences, prospects, mines, and deposits are
individually described in an appendix. Petroleum tests are
plotted
and
tabulated.
+
Rock
Point
Canyon
de Chelly
-rl"
Sanders
-
0
FIGURE 2
5 mi
- Index to
1: 100,000 s c a l e t o p o g r a p h i c
. .-
mapscoveringnorthwesternNew
t
Mexico.
+
Table 1
-
1:100,000-scale maps included in mineral resource potential of
northwestern New Mexico.
........................................
Map
No.
R e p o r t sO p e n - f i l e T i t l e
Corresponding
Map
........................................
1
M i n e r a lo c c u r r e n c ea n dr e s o u r c ep o t e n t i a lf o rm e t a l sa n d
uranium in the Socorro 30- by 60-minute topographic quadrangle, Valencia County, New Mexico.
229
2
M i n e r a lo c c u r r e n c ea n dr e s o u r c ep o t e n t i a lf o rm e t a l sa n d
u r a n i u m i n t h e B e l e n 30- b y 6 0 - m i n u t e t o p o g r a p h i c q u a d rangle, Valencia county, New Mexico.
229
3
Mineraloccurrences,prospects,mines,andresourcepoten30- b y 6 0 tial for metals and uranium in the Acoma Pueblo
minute topographic quadrangle, Valencia and cibola Counties,
New Mexico.
2 2 92,3 0
4
Industrial materials, occurrences, mines, and resource
p o t e n t i a l i n t h e S o c o r r o 30- b y 6 0 - m i n u t e t o p o g r a p h i c
quadrangle, Valencia County, New Mexico.
229
5
Industrial materials, occurrences, mines, and resource
30- b y 6 0 - m i n u t e t o p o g r a p h i c
potential in the Belen
New M e x i c o .
quadrangle, Valencia County,
229
6
Industrial materials, occurrences, mines, and resource
30- by 60-minute topographic
potential in the Acoma Pueblo
quadrangle, Valencia and Cibola counties, New Mexico.
2 2 92, 3 0
7
Petroleum tests and resource potential in the Socorro
30by 60-minute topographic quadrangle, Valencia County, New
Mexico.
229
8
Petroleum tests and resource potential in the Belen
60-minute topographic quadrangle, Valencia county,
Mexico.
9
30-
by
229
~ e w
Petroleum tests and resource potential in the Acoma Pueblo
by 60-minute topographic quadrangle, Valencia and
Cibola Counties, New Mexico.
2 2 92, 3 0
10
Geothermal springs and wells, and geothermal-resource
30- by 60-minute topographic
potential in the Belen
quadrangle, Valencia County, New Mexico.
229
11
Geothermal springs and wells, KGRF's,and geothermalr e s o u r c e p o t e n t i a l in t h e A c o m a P u e b l o 3 0 - b y 6 0 minute topographic quadrangle, Valencia and Cibola
Counties, New Mexico.
2 2 92, 3 0
30-
5
12
Geothermal springs and wells, and geothermal-resource
30- b y 6 0 - m i n u t e t o p o g r a p h i c
potential in the Belen
quadrangle, Valencia County, New Mexico.
229
13
Geothermal springs and wells, KGRF’s, and geothermalresource potential in the Acoma Pueblo 30- by 60-minute
topographic quadrangle, Valencia and Cibola Counties,
New Mexico.
229, 2 3 0
14
Mineral occurrences, prospects, mines, and resource
potential for metals, uranium, barite, and fluorite in
the Fence Lake 30- by 60-minute topographic quadrangle,
Cibola and McKinley Counties, New Mexico.
230, 2 3 1
15
Mineral occurrences, prospects, and mines for metals,
60uranium, barite, and fluorite in the Grants 30- by
minute topographic quadrangle, Cibola and McKinley
Counties, New Mexico.
230, 231
16
for metals,
Mineral occurrences, prospects, and mines
60uranium, barite, and fluorite in the Zuni 30- by
minute topographic quadrangle, Cibola and McKinley
Counties, New Mexico.
230, 231
17
Uranium resource potential in the Grants 30- by 60minute topographic quadrangle, Cibola and McKinley
Counties, New Mexico.
230, 231
18
Uranium resource potential in the Zuni 30- by 60minute topographic quadrangle, Cibola and McKinley
Counties, New Mexico.
230, 231
19
Coal occurrences, prospects, mines, and resource
p o t e n t i a l f o r A c o m a P u e b l o 30- b y 6 0 - m i n u t e t o p o g r a p h i c
quadrangle, VAlencia and Cibola Counties, New Mexico.
229, 2 3 0
20
Coal occurrences, prospects, mines, and resource
p o t e n t i a l f o r F e n c e L a k e 30- b y 6 0 - m i n u t e t o p o g r a p h i c
quadrangle, Cibola and McKinley Counties, New Mexico.
230, 231
21
coal occurrences, prospects, mines, and resource
potential for Grants 30- by 60-minute topographic
quadrangle, Cibola and McKinley Counties, New Mexico.
230, 231
22
Coal occurrences, prospects, mines, and resource
potential for Zuni 30- by 60-minute topographic
quadrangle, Cibola and McKinley Counties, New Mexico.
230, 231
23
Petroleum tests and resource potential in the Fence
Lake 30- by 60-minute topographic quadrangle, Cibola
and McKinley counties, New Mexico.
230, 231
24
Petroleum tests and resource potential in the Grants
30- by 60-minute topographic quadrangle, Cibola and
McKinley Counties, New Mexico.
230, 231
6
25
Petroleum tests and resource potential in the
Zuni
30- b y 6 0 - m i n u t e t o p o g r a p h i c q u a d r a n g l e , C i b o l a a n d
McKinley Counties, New Mexico.
230, 231
26
Geothermal springs and wells,
KGRF's,
and geothermalresource potential in the Fence Lake 30- by 60-minute
topographic quadrangle, Cibola and McKinley Counties,
New Mexico.
230, 231
27
Geothermal springs and wells,
KGRF's, a n d g e o t h e r m a l r e s o u r c e p o t e n t i a l i n t h e G r a n t s 30- b y 6 0 - m i n u t e
topographic quadrangle, Cibola and McKinley Counties,
New Mexico.
230, 231
28
G e o t h e r m a l s p r i n g s a n d w e l l s , KGRF's, a n d g e o t h e r m a l r e s o u r c e p o t e n t i a l i n t h e Z u n i 30- b y 6 0 - m i n u t e
quadrangle, Cibola and McKinley Counties, New Mexico.
2 3 0 , 231
29
Industrial materials, prospects and mines for sand and
gravel for Fence Lake 30- by 60-minute topographic
quadrangle, Cibola and McKinley Counties, New Mexico.
230, 231
30
Industrial materials, occurrences, and mines for the
G r a n t s 30- b y 6 0 - m i n u t e t o p o g r a p h i c q u a d r a n g l e , C i b o l a
and McKinley Counties, New Mexico.
230, 231
31
Industrial minerals, prospects, and mines for Zuni
30- b y 6 0 - m i n u t e t o p o g r a p h i c q u a d r a n g l e , C i b o l a a n d
McKinley Counties, New Mexico.
230, 231
32
Resource potential for sand and gravel deposits in the
F e n c e L a k e 30- b y 6 0 - m i n u t e t o p o g r a p h i c q u a d r a n g l e ,
Cibola and McKinley Counties.
230, 231
33
Resource potential f o r gypsum and sand and gravel
deposits in the Grants 30- by 60-minute topographic
quadrangle, Cibola and McKinley Counties, New Mexico.
2 3 0 , 231
34
Resource potential for gypsum and sand and gravel
d e p o s i t s i n t h e Z u n i 3 0 - by 6 0 - m i n u t e t o p o g r a p h i c
quadrangle, Cibola and McKinley Counties, New Mexico.
230, 231
35
Industrial materials occurrences, mines, and resource
potential for crushed and dimension stone, gypsum,
mica, and silica sand in the Acoma Pueblo 30- by 60minute topographic quadrangle, Valencia and Cibola
Counties, New Mexico.
229, 230
36
Resource potential for crushed and dimension stone,
60mica, and silica sand in the Fence Lake 30- by
minute topographical quadrangle, Cibola and McKinley
Counties, New Mexico.
230, 231
37
Resource potential for crushed and dimension stone,
in t h e G r a n t s 3 0 - b y 6 0 - m i n u t e
mica, and silica sand
topographic quadrangle, Cibola and McKinley Counties,
New Mexico.
230, 231
38
Resource potential for crushed and dimension stone,
mica, and silica sand in the Zuni 30- by 60-minute
topographic quadrangle, Cibola and McKinley Counties,
New Mexico.
230, 231
39
Resource potential for scoria, cinders, limestone,
e x p a n s i b l e s h a l e , a,nd p e r l i t e i n t h e F e n c e L a k e 3 0 by 60-minute topographic quadrangle, Cibola and
McKinley Counties, New Mexico.
230, 231
40
Resource potential for scoria, cinders, limestone,
expansible shale, and perlite in the Grants 30- by
60-minute topographic quadrangle, Cibola and McKinley
Counties, New Mexico.
230, 231
41
Resource potential for scoria, cinders, limestone,
by
expansible shale, and perlite in the Zuni 3060-minute topographic quadrangle, Cibola and McKinley
Counties, New Mexico.
230, 231
42
Coal occurrences, prospects, and mines in the Gallup
30- by 60-minute topographic quadrangle, McKinley
County, New Mexico.
231
43
D r i l l holes and measured sections for evaluation of coal
r e s o u r c e s i n t h e G a l l u p 30- b y 6 0 - m i n u t e t o p o g r a p h i c
quadrangle, McKinley County, New Mexico.
231
44
Coal resource potential in the Gallup 30- by 60-minute
topographic quadrangle, McKinley County, New Mexico.
231
45
Drill holes and measured sections for evaluation of coal
30- b y 6 0 - m i n u t e t o p o g r a p h i c
resources in the Chaco Mesa
quadrangle, McKinley County, New Mexico.
231
46
Coal resource potential in the Chaco Mesa 30- by 60-minute
topographic quadrangle, McKinley County, New Mexico.
231
47
Petroleum tests in the Gallup 30- by 60-minute topographic
quadrangle, McKinley County, New Mexico.
231
48
Petroleum resource potential in the Gallup 30- by 6 0 minute topographic quadrangle, McKinley County, New
Mexico.
231
49
Petroleum tests and o i l and gas pools in the Chaco Mesa
30- by 60-minute topographic quadrangle, McKinley County,
New Mexico.
231
50
Petroleum resource potential in the Chaco Mesa 30- by
60-minute topographic quadrangle, McKinley County, New
Mexico.
231
51
Uranium occurrences, prospects; and mines in the Gallup
30- by 60-minute topographic quadrangle, McKinley County,
New Mexico.
23 1
52
30- b y 6 0 - m i n u t e
Uranium resource potential in the Gallup
topographic quadrangle, McKinley County, New Mexico.
231
53
Uranium occurrences, prospects, and mines in the Chaco
Mesa 30- by 60-minute topographic quadrangle, McKinley
County, New Mexico.
23 1
54
the C h a c o M e s a 3 0 - b y
Uranium resource potential in
minute quadrangle, McKinley County, New Mexico.
55
Geothermal springs and wells and geothermal-resource
p o t e n t i a l i n t h e G a l l u p 30- b y 6 0 - m i n u t e t o p o g r a p h i c
quadrangle, McKinley County, New Mexico.
23 1
56
Geothermal wells and resource potential in the Chaco
M e s a 30- b y 6 0 - m i n u t e t o p o g r a p h i c q u a d r a n g l e , M c K i n l e y
County, New Mexico.
23 1
57
Industrial mineral occurrences, prospects, mines, and
mineral-resource potential for sand and gravel in the
G a l l u p 30- b y 6 0 - m i n u t e t o p o g r a p h i c q u a d r a n g l e , M c K i n l e y
County, Hen Mexico.
231
58
Industrial materials prospects and mines and resource
p o t e n t i a l f o r C h a c o M e s a 30- b y 6 0 - m i n u t e t o p o g r a p h i c
quadrangle, McKinley County.
231
59
Resource potential for crushed and dimension stone,
silica, zeolite, and mica in the Gallup 30- by 60minute topographic quadrangle, McKinley County, New
Mexico.
23 1
60
Resource potential for crushed and dimension stone and
s i l i c a i n t h e C h a c o M e s a 30- b y 6 0 - m i n u t e t o p o g r a p h i c
quadrangle, McKinley County, New Mexico.
231
61
Resource potential for scoria, cinders, limestone,
30- b y 6 0 expansible shale. and perlite in the Gallup
minute topographic quadrangle, McKinley County, New
Mexico.
23 1
62
Resource potential for scoria, cinders, limestone,
expansible shale, and perlite in the Chaco Mesa 30by 60-minute topographic quadrangle, McKinley County,
Neu Mexico.
231
9
60-
231
63
Petroleum tests in the Toadlena 30by 6 0 - m i n u t e
topographic quadrangle, San Juan County, New Mexico.
232
64
P e t r o l e u m t e s t s i n t h e F a r m i n g t o n 30- b y 6 0 - m i n u t e
topographic quadrangle, San Juan County, New Mexico.
232
65
P e t r o l e u m t e s t s i n t h e N a v a j o R e s e r v o i r 30- b y 60minute topographic quadrangle, San Juan and Rio Arriba
Counties, New Mexico.
232, 233
66
Petroleum tests in the Chaco Canyon 30- by 60-minute
topographic quadrangle, San Juan and Rio Arriba Counties,
New Mexico.
232, 233
67
30- b y 6 0 - m i n u t e
Oil and gas fields in the Toadlena
topographic quadrangle, San Juan County, New Mexico.
232
68
Oil and gas fields in the Farmington 30- by 60-minute
topographic quadrangle, San Juan County, New Mexico.
232
69
Oil and gas fields in the Navajo Reservoir 30- by 60minute topographic quadrangle, San Juan and Rio Arriba
Counties, New Mexico.
232, 233
70
Oil and gas fields in the Chaco Canyon 30- by 60-minute
RiO Arriba Counties,
topographic quadrangle, San Juan and
New Mexico.
232, 233
71
Petroleum resource potential in the Toadlena 30- by 60minute topographic quadrangle, San Juan County, New Mexico.
232
72
30- b y 6 0 Petroleum resource potential in the Farmingon
minute topographic quadrangle, San Juan County, New Mexico.
232
73
Coal occurrences, prospects, mines, and resource potential
f o r T o a d l e n a 30- b y 6 0 - m i n u t e t o p o g r a p h i c q u a d r a n g l e , S a n
Juan County, New Mexico.
232
74
Coal occurrences, prospects, mines, and resource potential
f o r F a r m i n g t o n 30- b y 6 0 - m i n u t e t o p o g r a p h i c q u a d r a n g l e ,
San Juan County, New Mexico.
232
75
Coal occurrences, prospects, mines, and resource potential
for Navajo Reservoir 30- by 60-minute topographic quadrangle, San Juan and Rio Arriba Counties, New Mexico.
232, 233
76
Coal occurrences, prospects, mines, and resource potential
for Chaco Canyon 30- by 60-minute topographic quadrangle,
San Juan and Rio Arriba Counties, New Mexico.
232, 2 3 3
77
Mineral occurrences, prospects, mines, and resource
potential for Rock Point 30- by 60-minute topographic
quadrangle, San Juan County, New Mexico.
232
7a
Mineral occurrences, prospects, mines, and resource
potential for Canyon de Chelly 30- by 60-minute
topographic quadrangle, San Juan county, New Mexico.
232
79
Mineral occurrences, prospects, mines, and resource
potential for Toadlena 30- by 60-minute topographic
quadrangle, San Juan County, New Mexico.
232
ao
Mineral occurrences, prospects, mines, and resource
potential for Farmington 30- by 60-minute topographic
quadrangle, San Juan County, New Mexico.
232
a1
Mineral occurrences, prospects, mines, and resource
potential for Chaco Canyon 30- by 60-minute topographic
quadrangle, San Juan and Rio Arriba counties, New Mexico.
232, 233
a2
Geothermal hells and resource potential in the Toadlena
30- by 60-minute topographic quadrangle, San Juan
County, New Mexico.
232
a3
Geothermal wells and resource potential in the Farmington
30- b y 6 0 - m i n u t e t o p o g r a p h i c q u a d r a n g l e , S a n J u a n C o u n t y ,
New Mexico.
232
a4
Geothermal wells and resource potential in the Navajo
Reservoir 30- by 60-minute topographic quadrangle,
San Juan and Rio Arriba Counties, New Mexico.
232, 233
a5
Geothermal wells and resource potential in the Chaco
Canyon 30- by 60-minute topographic quadrangle, San
Juan and Rio Arriba Counties, New Mexico.
232, 233
a6
Aggregate pits and resource potential in the Toadlena
30- by 60-minute topographic quadrangle, San Juan County,
New Mexico.
232
a7
Aggregate pits and resource potential in the Farmington
30- by 60-minute topographic quadrangle, San Juan
County, New Mexico.
232
aa
Aggregate pits and resource potential in the Navajo
R e s e r v o i r 30- b y 6 0 - m i n u t e t o p o g r a p h i c q u a d r a n g l e ,
San Juan and Rio Arriba Counties, New Mexico.
232, 233
a9
Aggregate pits and resource potential in the Chaco
Canyon 30- by 60-minute topographic quadrangle, San
Juan and R i O Arriba Counties, New Mexico.
232, 233
90
Resource potential for crushed and dimension stone,
60mica, and silica sand in the Toadlena 30- by
minute topographic quadrangle, San Juan County,
New Mexico.
232
11
91
R e s o u rpcoet e n t ifacolrru s haedndidm e n s isotno n e ,
mica, and silica sand in the Farmington
3 0 - by 60minute topographic quadrangle, San Juan County, New
Mexico.
232
92
R e s o u r cp eo t e n t i a l
f o r c r u s h ae dn id m e n s i so tn o n e ,
mica, and silica sand
i n t h e N a v a j o R e s e r v o i r 3 0 - by
60-minute topographic quadrangle, San Juan and Rio
Arriba Counties, New Mexico.
223323,
93
R e s o u r cp eo t e n t i af loc r u s h ea dn di m e n s i os nt o n e ,
mica, and silica sand in the Chaco Canyon
3 0 - b y 60minute topographic quadrangle, San Juan and Rio Arriba
Counties, New Mexico.
223323,
94
R e s o uproctee nltfiiogarhlt w e iagghgtr e gaantde
l i m e s t o n e i n t h e T o a d l e n a 30- b y 6 0 - m i n u t e t o p o g r a p h i c
quadrangle, San Juan County, New Mexico.
232
95
R e s o uproctee n t i a l
f o r l i g h t w e iagghgtr e gaantde
l i m e s t o n e i n t h e F a r m i n g t o n 30- b y 6 0 - m i n u t e t o p o g r a p h i c
q u a d r a n g l e , S a n Juan County, New Mexico.
232
96
R e s o u pr oc te e n tlfiioagrlh t w e i ag gh gt r e g a nt de
limestone in the Navajo Reservoir
3 0 - by 60-minute
topographic quadrangle, San Juan and Rio Arriba
Counties, New Mexico.
97
R e s o u r c ep o t e n t i a l
f o r l i g h t w e i g h ta g g r e g a t ea n d
30- by 60-minute
limestone in the Chaco Canyon
topographic quadrangle, San Juan and Rio Arriba
Counties, New Mexico.
12
2 23 33 2 ,
2 3 2 2, 3 3
Definitions
Mineral
resources
are
the
naturally
occurring
concentrations
or liquid) inor on the earth’s crust
of materials (solid, gas,
that
can
be
extracted
economically
under
current
or future
economic conditions. Reports describing mineral resources vary
from
simple
inventories
of
known
mineral
deposits
to
detailed
geologic investigations.
A mineral
occurrenceis any
locality
where
a useful
mineral
or material occurs. A mineral prospect is any occurrence that
has
been
explored
by
or above
underground
ground
techniques
or by
or
subsurface drilling. These two terms do not have any resource
economic implications. A mineral deposit isa sufficiently large
concentration
ofa valuable or useful
mineralor material
that
or future economic conditions.A
may be extracted under current
mine
is
useful
any
prospect
produced,
or is
mineral-resource
or probability
it
potential
thata mineral
can
be
will
extracted
preferred
favorability
in
is
describing
used
in
resources,
Factors
the
is
an
that
is
a measure
could
feasibility
of
producing,
a
of
of
preclude
13
the
sufficient
under
whereas
likelihood
quantities
current
or future
type
or
The mineral-resource
potential
development
the
mineral-resource
rock
quantities
the
extracting
is
Mineral-resource potential
area
the
area
in
describing
a specific
not
a measure
but
an
economically
geologic environment (Goudarzi,1984).
potential
of
occur
1983).
conditions (Taylor and Steven,
is
currently
mineralor material.
The
so that
which
of
minerals,
of
the
of
the
mineral
occurrence.
resources,
land
such
ownership,
as
accessibility of the
minerals,or cost of exploration,
development] production, processing,or marketing] are not
considered
in
assessing
the
resource
potential;
although
these
factors certainly affect the economics
of extraction. Total
evaluation
of
mineral-resource
understanding of the
a given
known
potential
and
involves
a complete
undiscovered
mineral
resources
in
area.
Numbering System
The
numbering
system
used
in
this
report
is
based
upon
the
township] range, and section land-grid system (Fig.
3) and is
used
by
the
New
Mexico
State
Engineer
for
numbering
water
wells
and springs. In this system, each occurrence
or sample location
has a unique
location
number
consisting
of
four
parts
separated
by periods (i.e. 3N.53.24.441). The first part refers to the
township]
the
second
part
to
the
range,
and
the
third
part
section. The fourth part locates the occurrence to the nearest
quarter-quarter-quarter section block, if posible,
as indicated
in Figure3.
An occurrence or sample number designated
of section
3N.53.24.441 is located in the NW1/4 SE1/4 SE1/4
24,
T3N1 R5E. Some occurrences are located only to the nearest
section, quarter-section] or quarter-quarter section because the
occurrence
can
not
be
more
accurately
located
or the occurrence
extends over the entire given area.
In unsurveyed areas, the
locations
are
approximated
14
by
projecting
section
lines.
to
Figure 3- Numbering system used in this report,
A - S u b d i v i s i o n of a township into sections.
B - S u b d i v i s i o n of a section into quarter-quarter-quarter
sectionblocks.Minesymbolindicateslocation
of a n o c c u r r e n c e n u m b e r e d
3 N, 5E424.441,
SECTION 24
RANGE 5 EAST
I
Ill
I
112
121
"-IlO-""120""2lo"
I
I
I
I
I
211
122
I 212
I
113 I 123
114
I 124
213
214
221
I 222
-- 220I
223 I 2 2 4
'O
I
241 I 2 4 2
I
- - 240"
243 I 2 4 4
I
I
311
I 312
321
322
--
"-310"
314
313
-
I
I
331
1332
341
"-330"
-320- -
323
300
A
411 1412
- - 410"
I
413
I
414
1
I
421 I 4 2 2
- -420"
I
4231424
4
442
431
1342 432
I%
I 344
443 1444
- - -340" "430"
333 I334 343
6 MILES-
j 324
I
I
I
433 1434
- - 440- I
c"---------- I MI LE-
B
EVALUATION
PROCESS AND SOURCES OF INFORMATION
Introduction
The
complex
evaluation
process
of
of
mineral-resource
geologic
analogy
of
potential
involves
a
prominsing
or favorable
geologic environments with geologic settings (i.e. models) that
or
contain known economic deposits. Such subjective assessments
evaluations
area to be
depend
on
evaluated
the
and
available
on
the
information
current
concerning
knowledge
the
and
understanding of known economic deposits. Assessments of
resource
the
team
and
potential
researchers,
depend
therefore
ofNMBMMR geologists
are
upon
subsequently
the
these
who
knowledge
evauations
specialize
reviewed
by
in
and
are
experience
assessed
a
specific
additional
of
by
commodities
commodity
specialists. Evaluations of resource potential are timedependent
because
the
data
base,
technology,
and
economic
conditions change with time. The date of resource potential
studies
must
be
given
and
these
studies
must
be
periodically
updated.
Assessment
The
used
process
currently
by
of
Procedures
evaluating
NMBMMR is
the
the
mineral-resource
similarto that
used
by
potential
the
U.S.
Geological Survey (Shawe,1981; Goudarzi, 1984) and Oak Ridge
National Laboratory (Voelker et al.,1979).
minimal
field
because
of
1.
and
investigation
time
constraints
is
However, only
incorporated
imposed
into
upon
the by
NMBMMR
these
studies
theBLM.
The most important stage in any geologic investigation
especially
in
these
evaluations
is
the
compilation
of
all
available published and unpublished data.
A complete
bibliographic
search
of
published
geologic
references
2.
essential. Bibliographies used are listed in Table
geologic
index
Evaluation
and
to
mapping
ofthe resource
interpretation
of
is
helpful
potential
several
data
and
sets
A
included
involves
is
in
complex
each
report.
integration
maintained
by
various
state and €ederal agencies, including a) MRDS (Mineral Resources
Data Systems, formerly CRIB, Computerized Resource Information
Bank, and MILS (Mineral Industry Location System): b) DMEA
(Defense Minerals Exploration Administration); c) NURE (National
Uranium
Resource
Evaluation),
HSSR
(Hydrogeochemical
and
Stream-
sediment Reconnaissance) andARMS (Aerial Radiometric and
Magnetic Survey): d) NCRDS (National Coal Resource Data System):
e) AML (Abandoned Mine Lands): and f) various unpublished file
(NMBMMR, State Inspector of
data from state and federal agencies
U.S.
Mines, State Highway Department, BLM,
Bureau of Mines,U.S.
Department of Energy). From published and unpublished data sets
known mineral occurrences, prospects, mines, and deposits and oil
and gas tests are identified and plotted on maps. Geochemical
and
geophysical
anomalies
are
described
and
identified.
Known deposit types are identified and favorable
2.
geologic
environments
that
may
contain
potential
economic
resources are defined. Geologic models are developed. All types
of metallic, nonmetallic, and energy fuel deposits are examined.
Field
3.
examinations,
when
time
permits,
are
valuable.
A preliminary evaluation of the mineral-resource
potential from available data is determined.
A number of factors
must be evaluated, including a) host rock favorability, b)
17
Table 2
-
Bibliographies and geologic map indices.
Bibliography
Comments
........................................
Burks and Schilling (1955)
general bibliography covering through 1950
Schilling and Schilling (1956)
general bibliography covering 1951-1955
Schilling and Schilling
(1961)
general bibliography covering 1956-1960
general bibliography covering 1961-1965
R a y (1966)
Koehn and Koehn
(1973)
general bibliography covering 1966-1970
Wright and Russell
(1977)
general bibliography covering 1971-1975
Heljeson and Holts
(1981)
general bibliography covering through 1975
Adkins-Heljeson and Holts
general bibliography covering 1976-1980
(1984)
R o b e r t s o n (1976)
bibliography of Precambrian geology
Schilling (1975)
bibliography of Grants uranium region
M c l e m o r e (1982, 1983)
bibliography of uranium
K i r k et al. (1983)
b i b l i o g r a p h y o f M.S.
dissertations
Boardman and Broun (1958)
geologic map index
McIntosh and Morgan (1970)
geologic map index
McIntosh and Eister
geologic map index
(1979)
New Mexico Bureau of Mines and
Mineral Resources Price Lists
in New Mexico
t h e s i s a n d Ph.D.
publications and open-file reports
Various listings of M.S. thesis
a n d Ph.D. d i s s e r t a t i o n s f r o m
Universities
""""-"""""""""""""""""""""""""""""""""""-
structural controls,c) evidence of mineralization, d) previous
mining and production, e) geochemical and/or geophysical
anomalies, f) regional geologic setting, g) time
of
mineralization, h) alteration, i) mineralogy,j) processes
affecting mineralization since formation, k)
andgeologic
18
history. Reports are written describing known deposit types,
assessing
were
the
resouce
potential,
and
explaining
how
conclusions
reached.
Recommendations for additional studies and types of data
4.
required
The
should
for
better
assessments
evaluation
be
followed
of
the
by
field
are
made.
preliminary
mineral-resource
investigations
and
more
potential
detailed
mapping, geochemical sampling, and geophysical studies.
A final
assessment
However,
should
these
cooperative
be
detailed
agreement
Repeated
made
based
studies
of
are
detailed
not
field
included
investigations.
under
the
BLM and NMBMMR.
the
between
evaluation
on
the
mineral-resource
potential
is
required. New data on the study area should be incorporated into
the data base. New geologic concepts and models and more
sophisticated
exploration
techniques
could
drastically
alter
the
assessments. New technologies that require different commodities
and
changes
exploration
in
and
mining,
milling,
development
of
and
processing
lower-grade
or new
could
types
allow
of
deposits. Political and economic conditions change rapidly and
can
transform
today's
mineral
curiosity
into
tomorrow's
mineral
deposit. Therefore, mineral-resource potential assessments must
be
revised
periodically
and
19
updateda timely
on
basis.
CLASSIFICATION
Classification
of
OF
MINERAL-RESOURCE
mineral-resource
POTENTIAL
potential
differ
from
classification of the mineral resources. Quantities of mineral
resources
are
classified
according
to
availability
of
geologic
or
data (geologic assurance), economic feasibility (identified
undiscovered), and as economic or subeconomic (Fig.4 ) .
resource
of
potential
the
is
a qualitative
probability
existence aofcommodity.
Classification
simple
judgmentof the
Mineral-
subjective
complex
of
mineral-resource
schemes,
quantitative
and
like
potential
that
statistical
varies
from
NMBMMR,
currently
by to
used
methods
(Harris
and
Euresty,
1969; Harris, 1969; Harris and Agterberg, 1981).
However, it is
rare
that
commodities
for
complex
an
adequate
data
statistical
base
for
treatment,
all
especially
for
is
available
preliminary
assessments. Furthermore, a simple classification scheme is more
versatile
for
uses
such
as
land-use
planning
and
exploration
for
of
new deposits. The potential is classified for the purposes
this
report
according
to
availability
of
geologic
data
and
relative probability of occurrence as high, moderate, low, very
low, or unknow (Fig. 5).
Hicih mineral-resource Dotential is assigned to areas where
there
are
known
geochemical,
or
mines
or
geophysical
or where
deposits
data
the
indicate
geological,
an
excellent
probability that mineral deposits occur. All acitve and
producing
deposits
properties
in
known
fall
into
mining
this
districts
or in
class
known
as
well
areas
as
of
mineralization. Speculative deposits, such as reasonable
20
identified
-
1.c
.9
.ln
Y-
Economic
Identified
Remonstrated
Indicated
Measured
Inferred
Reserves
Inferred
reserves
.-oE
Undiscovered
+
0
'
'C
Marginally
economic
.a
c
0
Marginal
reserves
I
a
Speculative
Hypothetical
Inferred
marginal
reserves
Resources
t
2
m
a
m
Subeconomic
Subeconomic resources
C
.ln
I
0
2
~~
-2
I
Other
occurrences
-
.
-
Nonconventional and low-gradematerials
Increasing degree of geologic assurance
Figure 4. Classification of mineralresources
-
1
D l Very low
I A
I
Low
I
Moderate
1
High
Unknown or unevaluated
- Increasing
degree of probability
-
Figure 5. Classificationofmineral-resourcepotential
extensions
partially
of
known
known
mineralization,
where
deposits
are
sufficient
Information,
mining
within
classified
as
as
quantity,
and
identified
geologic
high
a high
indicates
data
such
districts
trends
deposits
or
areas
mineral-resource
probability
quality,
of
grade,
or
of
potential
occurrence.
past
and
present
production, depth to deposit, and reserves, is important although
not
always
essential,
in
determining
that
an
area
a high
has
potential. Exploration may be in progress or expected
to occur
within 10 years.
Moderate
geologic,
mineral-resource
geochemical,
possibility
that
or
Dotential
geophysical
undiscovered
exists
data
deposits
in
areas
where
suggest
a reasonable
occur
in
formations
or
geologic settings elsewhere. Speculative deposits in known
mining
districts
potential
if
or
mineralized
a high
for
evidence
areas
a moderate
assigned
are
potential
of
economic
deposits
is inconclusive. This assessment, like other classifications,
can
he
changes
revised
in
Low
when
economic
new
conditions
mineral-resource
available
data
information,
imply
develop.
Dotential
the
geneticor models,
new
exists
occurrence
of
in
areas
where
mineralization,
but
indicate a low probability for the occurrence aof
deposit. This
includes
or
speculative
settings
not
deposits
known
to contain
similar to environments
Additional
geologic
or
in
areas
economic
settings
data
may
be
of
of
geologic
deposits,
known
needed
to classify
environments
but
economic
better
which
are
deposits.
such
areas.
A
classification
reserved
for
areas
of
very
where
23
low
mineral-resource
sufficient
information
Dotential
indicates
is
that
an
area is unfavorable for economic deposits. This evaluation may
include
as
areas
with
wellas areas
dispersed
that
have
but
been
uneconomic
depleted
mineral
of
their
occurrences
mineral
resources. Use of the very low potential classification requires
a high
Very
level
low
that
there
These
are
may
"economic"
current
geologic
mineral-resource
deposits
though
of
and
too
geophysical
This
of
assessment
are
is
level
support
is
assumed
of
to
an
evaluation.
potential
even
assurance.
the
commodity
and
conditions.
mineral-resource
necessary
and
for
geologic
geological,
inadequate
to otherwise
low
such
economically,
according
unknown
where
to
extracted
vary
economic
areas
data
deep
to be
depths
future
for
potential
not a be
high
A classification
reserved
assurance
any
other
Dotential
geochemical,
classify
an
is
and
area.
classification
(high,
moderate, low, or very low) would be misleading. These areas
should
receive
The
high
proximity
mineral-resource
for
potential
additional
of
some
study.
areas
can
not
be
assessed because of lack of useful data. Detailed geologic
mapping
ata scale of 1:24,000 may
be
required
before
the
mineral-resource potential can be assessed. The lack of data
does not imDlya very low mineral-resource Dotential. The
difference
area
is
potential
between
that
some
which
an
unknown
data
implies
exists
the
resource
in
an
possibility
potential
area
of
of
the
and
unevaluated
unknown
resource
occurrence
of
resources.
This
classification
scheme
is
similar
to
that Brobst
used by
and Goudarzi (1984) where a high mineral-resource potential
24
corresponds to substantiated
resource
potential
and
a moderate
potential corresponds toa probable resource potential. Goudarzi
(1984) of
theU.S. Geological
classification
schemeto
Survey
the
one
In addition to evaluation
proposes
a similar
used
of
the
in
this
report.
mineral-resource
potential,
the potential for development is assessed. The potential for
development
is
classified
simply
as
high,
moderate,
or low and
takes into account such factors as grade, tonnage, current market
conditions, and status, and similar economic factors.
potential
for
development
indicates
producing a commodity or economic
production
of
the
that
the
conditions
deposit
is economically
area
suggest
feasible
is
currently
that
currently
or
in the near future. Moderate potential for development exists in
areas
where
production
of
the
deposit
would
occur
if
certain
geologic or economic conditions became favorable. Low potential
for development
indicates only
a slight possibility, if any,
for
production of the deposit. The potential for development
classification
offer
an
is
also
a highly
evaluation
of the
subjective
economic
25
judgment,
feasibility
of
but
an
it
area.
does
Part I1
Summary of the mineral-resource
by V i r g i n i a T. McLemore
26
potential
,'
An.Executive
Summary of
A Preliminary
Mineral-Resource
Potential
of
Valencia County, Northwestern
New Mexico
.
New Mexico
Virginia
T. McLemore,
Ronald F. Broadhead,
James M. Barker,
George S. Austin,
Kris Klein,
Karen B. Brown,
Diane Murray,
Mark R. Bowie,
and John S. Hingtgen
Bureau of Mines and Mineral
Open-file
Report 229
September
Resources
1, 1986
Prewared in coooeration
with
United States Department of Interior
Bureau of Land Management
21
ABSTRACT
A preliminary
Valencia
County
mineral-resource
involves
A
potential
assessment
of
analyses available
of
published and
unpublished geologic, geochemical, geophysical, and economic data
and a brief field reconnaissance. Mineral-resource potential is
an
assessmentof the
favorability
that
a
commodity
will
'
occur
substantial concentrationsin a given area that can be exploited
under current or future economic conditions. A classification of
A high
high, moderate, low, very .low, and unknown is used.
mineral-resource potential exists in areas where geologic and
economic
data
indicate
an
excellent
probability
that
economic
mineral deposits occur there. Moderate or
low mineral-resource
potential exists in areas where the data indicate
a lesser
probability that economic mineral deposits occur.A
classification of very low potential is reserved for areas where
sufficient information indicates that an area is unfavorable
for
economic deposits. A classification of unknown mineral-resource
potential is assigned to areas where either necessary geologic,
to
geochemical, geophysical, and economic data are inadequate
otherwise
classify
an
area
or
where
any
other
classification
(high, moderate, low,or very low) would be misleading. Some
areas
have
not
been
for specific
evaluated
commodities
because
Of
lack of useable data.
Travertine deposits along the Lucero uplift in western
Valencia
County
are
currently
being
mined
for dimension
stoneand
have a high resource potential. Products include 2-inch sheets
and 8-inch slabs. Additional travertine deposits may occur along
in
the Hubbell bench where the resource potential is low.
The
potential for travertine as crushed stone is also high.
High
potential
also
exists
for
sand
and
gravel
deposits
in
Quaternary-Tertiary deposits. Resources in the Rio Puerco
drainage system, central Rio Grande valley, and terraces in
eastern Valencia County are extensive.
.Material for adobe also
has a high-resource potential in these areas.
Crushed
and
dimension
stone
resources
occur
in
Precambrian
rocks and Paleozoic sandstones and limestones
in'the Manzano
Mountains,,where the resource potential is high. Limestone for
cement occurs in bhe Pennsylvanian Madera Formation
in the
southern
Manzano
'Mountains
where
the
resource
potential
is
high.
Travertine'from the Lucero uplift also could be used in cement.
Moderate
potential
existsfor (1) Cu-Au-Ag (+ U, Pb) in
(2) gypsum in the
Precambrian rocks in the .Manzano Mountains,
Permian
Yesoand San Andres Formations' in the Lucero uplift,
(3)
scoria and cinders in the Cat Hills area in northern Valencia
County, (4) silica sand in Precambrian quartzites in the Manzano
Mountains, and ( 5 ) petroleum accumulations in Paleozoic and
Mesozoic reservoirs in the Albuquerque Basin.
Additional
geologic
mapping
and
geochemical
studies
are
suggested in areas with active claims,
in the Lucero uplift and
Manzano
Mountains,
Aggregate
resources
andin areas with unknown resource potential.
should
be
mapped
and
sampled
in
greater
detail prior to extraction. Isopach facies and structure contour
maps of several
Valencia
County
formationsin the Rio Grande valley in central
should
be
completed
to delineate
for oil and gas accumulations.
favorable
areas
SUMMARY
As is true
studies
are
with
all diminary
pre
investigations, ad'
dikiona1
necessary
to adequately assess the mineral-resource
potential in Valencia County. These assessments must be reevaluated as economic conditions, geologic interpretations, and
models change.
The mineral-resource potentialsfor various commodities
in
Valencia County are summarized in Table 15 and Figures
15, 11,
16, 17, 18, 19, 21, and 24.
The most important commodity in
in the
Valencia County is travertine used fQr dimension stone
Lucero uplift. High potential also exists for sand and gravel,
limestone, adobe material, and crushed and dimension stone.
,Moderate
potential
exists
for Cu-Au-Ag .(+U,
- Pb) in Precambrian
rocks, gypsum;scoria and cinders, silica sand, zeolites, and
petroleum. Additional work is necessary to calculate reserves
and resources in these areas.
30
_.
I
TABLE 3
type of *It
-
S u m a r y , o f mineral-resource potential
County(after McLemore et a1.;.1986a).
.~
Pctsatlcn
~~
-
Cffgrapl,ie
laaticn
.
in
Valencia
I
ninornr=renhre
ptentia1
derate
1,Y
7-1
1tes
Petrolelm
RECOMMENDATIONS
Detailed
geologic
terranesin the
Precambrian
determine
mapping
the
and
Manzano
mineral-resource
studies
in
geochemical
Mountains
potential
for
are
needed
to
base-
and
precious-metals and uranium.
Isopach facies and structure-contour maps
of several
formations
in
the
County should be
Rio
Grande
completed
in
valley
in central Valencia
order
to delineate
favorable
areas for oil and gas accumulations.
Aggregate
detail
resources
should
be
mapped
and
sampled
in
greater
priorto extraction of such materials.
Any areas with active claimsshould be examined (Fig.10).
Geologic
Luerco
Area
mapping
uplift
near
geothermal
and
to
geochemical
evaluate
the
the
Manzano
Mountains
resource
potential.
studies
resource
should
are
required
on
potential.
be
examined
for
Drilling is required in the Rio Puerco coal field in
northwestern
resource
Valencia
County
to aid in evaluating
the
coal
potential.
The ratingof unknown for vermiculite and expansible shale
'does not imply that the potential is low. Rather, the
appropriate rock typesare present but needto be
in
more
detail
specifically
for
these
examined
resources.
the
An .Executive Summary of
A Preliminary Mineral-Resource Potential
of
Cibola County. Northwestern New Mexico
by
Virginia T. McLemore,
Ronald F. Broadhead,
Gretchen Roybal,
William L. Chenoweth,
James M. Barker,
Robert M. North, .
Mark R. Bowie,
John S . Hingtgen,
Diane Murray,
Kris Klein,
Karen B. Brown,
and GeorgeS. Austin
New
Mexico
Bureau
of Mines and Mineral
Open-file Report230
Resources
December, 1986
Prepared in cooperation with
United StatesDepartment of Interior
Bureau of Land Management
33
ABSTRACT
A preliminary
mineral-resource
assessment
of
potential
Cibola County involves analyses
of available published and
unpublished geologic, geochemical, geophysical, and economic data
and a brief field reconnaissance. Mineral-resource potential is
an
assessmentof the
favorability
that
a
commodity
will in
occur
substantial concentrations.ina given area that can be exploited
under current or future economic conditions. A classification of
high, moderate, low, very low,or unknown is assigned. A high
mineral-resource
economic
data
potential
exists
in
areas
where
geologic
and
indicate
an excellent probability that economic
mineral deposits occurthere.
Moderate or low mineral-resource
potential exists in areas where the data indicate a lesser
probability that economic mineral deposits occur.A
classification of verylow potential is reserved for areas where
sufficient information indicates that an area is unfavorable for
economic deposits. A classification of unknown mineral-resource
potential is assigned to areas where either necessary geologic,
geochemical, geophysical, and economic data are inadequate to
otherwise
classifyan area
or
where
any
other
classification
(high, moderate, low, or very low) would be misleading. Some
areas
have
not
been
evaluated
for
specific
because
of
commodities
lack of useable data.
Uranium is currently
being
mined
from
the
Morrison
Formation
at Mt. Taylor mine, although economic conditions are unsettled
for U.S. uranium producers. The uranium resource-potential is
high in
the
Morrison
and
Todilto
34.
Formations
in
the
Grants
district and couldbe mined if economic conditions improve. Coal
resource potential is high in the Salt Lake field.
River Project of Arizonaplans t 0 mine
The Salt
coal
just south of Cibola
County in the nearfuture. Petroleum resource potential is
moderate in the Puerco fault zone and Acoma and Zuni Basins.
The resource potential for base- and precious-metals,
in Precambrian rocksin the Zuni
fluorite, and barite is moderate
Mountains. Various units throughout the countyhave a high
resource potential locally for clays, crushed and dimension
stone, gemstones (smallquantities), limestone, and travertine.
Pumice, scoria, and perlite have a high resource potential in the
Mt. Taylor area.
Additional geologic mapping and geochemical studies are
suggested in areas with active claims,in the Lucero uplift and
Zuni Mountains. Exploration drilling and samplingof fluorspar
veins in the Zuni Mountainsis required to properly assess their
potential. Aggregate resources should be mapped and sampled
prior to extraction.
The rhyolites near Mt. Taylor should be
examined for tin potential.
35
_-
SUMMARY
As is true with
all preliminary investigations, additional
studies
are
necessary
to adequately assess the mineral-resource
potential in Cibola County. These assessments must be reevaluated as economic conditions, geologic interpretations, and
models change.
The mineral-resource potentialfor various commodities in
Cibola County are summarized in Table
30 and Figures 18, 20, 22,
26,
2 8 , 29, 30, 31, and 32.
The most important commodities in
the county are coal and uranium. Additional work is necessary
to
calculate reserves and resources
of these commodities in areasof
high
potential.
F.2trOle"n
hlgh
mrlerate
RECOMMENDATIONS
Any areas with active claims should
be examined (Fig. 15).
Isopach facies and structure-contour maps
of several
formations in
Cibola
County
should
be completed to delineate
favorable areas foroil and gas accumulations.
Aggregate
detail
resources
to
and
sampled
in
greater
priorto extraction of such materials.
Geologic
Lucero
should
be mapped
mapping
uplift
evaluate
and
and
the
geochemical
in
the
studies
northern
mineral
resource
and
are
required
central
Zuni
in
the
Mountains
potential.
Sample fluorspar veins for silver and gold content.
Examine rhyolites near Mt. Taylor for tin potential.
Chemical
sampling
of
the
Glorieta
Sandstone
high-silica sandstones is required
to determine
potential
for
high-silica
Detailed
studies
deposits
are
of
the
sand
and
the
resources.
mineralogy
required
to assess
Member
their
and
chemistry
of clay
potential.
of the Mt. Taylor area
Geochemical and geophysical studies
are required to assess
the
geothermal-resource
potential.
Exploration drilling and sampling
of fluorspar veins in Zuni
Mountains
are
required
to determine
depth
and
extent
of the
deposits.
Examine
outcrops
of
the
Yeso
Formation
for
manganese
resources.
Exploration
regions
and
rated
testing
of expansible
unknown
are
shale
needed
to delineate
and
any
vermiculite
ores.
other
An Executive Summary of
Mineral-Resource Potential
of
McKinley County, Northwestern New Mexico
A preliminary
by
Virginia T. McLemore,
Gretchen Roybal,
K i m Birdsall,
Ronald F. Broadhead,
William L. Chenoweth,
Robert M. North,
James M. Barker,
Peter Copeland,
Mark R. Bowie,
John S. Hingtgen,'
Karen B. Brown,
and Kris Klein
New
Mexico
Bureau of Mines and
Open-file Report231
Mineral
December 1986
Prepared in cooperation with
United StatesDepartment of Interior
Bureau of Land Management
39
Resources
ABSTRACT
A
preliminary
McKinley
County
mineral-resource
involves
potential
analyses
of
assessment
available
of
published
and
unpublished geologic, geochemical, geophysical, and economic data
and a brief reconnaissance. Mineral-resource potential is an
assessment
of
the
favorability
that
a commodity
will
occur
in
substantial concentrations in
a given area that can be exploited
.
under current or future economic conditions.
A classification of
A high
high, moderate, low, very low, or unknown is assigned.
mineral-resource
economic
data
potential
indicate
exists
an
in
areas
excellent
where
probability
geologic
that
and
economic
mineral deposits occur there. Moderate or low mineral-resource
potential
exists
in
areas
where
the
data
indicate
a lesser
A
probability that economic mineral deposits occur.
classification
sufficient
of
very
low
information
potential
indicates
that
is
reserved
for
an
area
unfavorable
is
areas
where
for
economic deposits. A classification of unknown mineral-resource
potential
is
to areas
assigned
where
either
necessary
geologic,
geochemical, geophysical, and economic data are inadequate to
otherwise
classify
an
area
or where
any
other
classification
(high, moderate, low, or very low) would be misleading. Some
areas
lack
have
of
useable
Energy
McKinley
not
been
Coal is currently
€or
specific
commodities
because
data.
resources
County,
evaluated
are
although
being
the
most
important
commodities
other
commodities
have
been
produced
and ahas
high
potential
in
produced.
in
the
Star Lake, San Mateo, Crownpoint, and Gallup fields. Oil and gas
of
production
County
is
and
substantial
the
from
resource
the
San
potential
Juan
is
high
Basin
in
in
McKinley
several
formations
in the San Juan and Acoma Basins. Uranium is currently being
mined
from
the
(Homestake),
Morrison
although
Formation
economic
at
the
conditions
23 mine
Section
are
unsettledU.S.for
uranium producers. The uranium resource-potential is high in the
Morrison
be
and
mined
Todilto
if
Various
Formations
economic
units
in
conditions
throughout
the
Grants
district
and
could
improve.
the
county a have
high
resource
potential locally for clays, crushed and dimension stone, silica
sand, gemstones (small quantities), limestone, and humate. Many
of these
commodities
are
needed
to
support
production
of
the
energy resources. The resource-potential forC02 and helium in
the
Acoma
and
San
Juan
Basins,
Gallup
sag,
and
Defiance
uplift
moderate. The resource potential for base- and precious-metals,
fluorite,
and
barite
northern
Zuni
Additional
is
unknown
in
mapping
and
Precambrian
rocks
in
the
studies
are
Mountains.
geologic
required in areas with
active
claims
geochemical
and
in
the
northern
Zuni
Mountains. Isopach facies and structure-contour maps of several
formations
in
Cibola
County
should
be
completed
to
delineate
favorable areas for oil and gas accumulations. Aggregate
resources should be mapped and sampled prior to extraction. The
rhyolites
near
Detailed
studies
silica
sand
Mt.
of
Taylor
should
the
mineralogy
resources
are
needed
resources.
41
be
examined
and
to
for
chemistry
fully
tin
potential.
of
clays
evaluate
these
and
is
SUMMARY
As is true with all preliminary investigations, additional
studies
are
necessary
to
assess
adequately
the
mineral-resource
potential in McKinley County. These assessments must be reevaluated as economic conditions, geologic interpretations, and
models change.
The
mineral-resource
potential
for
various
commodities
in
30 and Figures 17, 20,
McKinley County are summarized in Table
22, 24, 26, 30, 31, 32, 33, 35, and 36.
The most important
commodities are petroleum, coal, and uranium. Aggregate
resources, limestone, clays, crushed and dimension stone
resources
also
have
a high
potential
and
are
needed
to
support
production of the energy resources. Additional work is necessary
to
calculate
of high
reserves
potential.
and
resources
of
these
commodities
in
areas
TABLE 5
-
~
~
Fruitland Formation
Menefee Formation
Coal
Crevasse Canyon Formation
Upper Cretaceous sandstones,
Petroleum
Uranium
(?anadium,
nwlytdenum)
Base and precious
h t r a d a Sandstone
Cretaceous,Jurassic,
Permian, Pennsylvanian
nme
Permianand Pennsy1,vanian
Morrison,Lhkota,
and Tcdilto
Iron
Tin, beryl
Cop He
Clays
Crushedand
Dimension stone
remstones
oypsum
Humate
pumice
~
.
.
tuffs
high
low to moderate
low
high
derate
hiqh to moderate
high
o
lw to hioh
d e r a t e to”high
d e r a t e t o low
moderate to low
Zuni u p l i f t
Defiance u p l i f t
Grants district
low to very low
o
lw
high to d e r a t e
Z m i Mountains
M t . Taylor
San Juan and
Amm & s i n s
C%dlup sag
Defiance u p l i f t
entire county
northern and western
McKinley County
recent stream beds
various units
”
-
Kimberlite t u f f s
Navajo Reservation
Zunibkmntains
coal f i e l d s
Permian rocks
coal-bearing
units
Cretaceous
Tertiary
Expansible shale
Limestone
various units
San Wres Formation
T c d i l t o Limestone
and g r a v e l
Star U k e f i e l d
Cham Canyon f i e l d
Chacra Mesa f i e l d
.San Mteo f i e l d
StanAing Rock f i e l d
CrmpSnt field
Gallup f i e l d
Znni f i e l d
San Juan and
Amm h s i n s
Gallup sag
Paleozoic limstone
Tertiary volcanics
Paleozoic and Mesomic
units
Paleozoic and Mesomic u n i t s
P a l e o m i c and Mesolaic u n i t s .
Mesozoic u n i t s
Cretaceous units
Tertiary volcanics
Zeolites
~
Zuni Mountains
Scoria and cinders
Silica sand
~, ~ .
Precanbrian veins
metals,~un~~,@~~~4
Sard
~
Summary of mineral-resource potential in McKinley
County (after McLemore et al., 1 9 8 6 ~ ) .
Z i l d i t l o i Mountain
TZON, R21W
Malpais
Zilditloi Wntains
-
various Cuaternary units
various units
Bidahcchi Formtion
Brushy Basin Member
,
43
Zuni Mountains
Tcdilto Park,
Winnate-Grants
scatt;red
throughout
county
high
-
&theel area
Chuska Mountains
-
unknown
Inw
unknown
moderate
derate
derate
d e r a t e to high
high
derate
d e r a t e to high
d e r a t e to high
o
lw
d e r a t e to high
moderate
moderate
mlerate
unknwn
high
moderate
low to high
unknown
unknown
RECOElMENDATIONS
1)
Geologic mapping is required in the Zuni Mountains area to
determine
the
mineral
resource
potential.
2)
Any areas with active claims should be examined 12).
(Fig.
3)
Isopach facies and structure-contour maps of several
formations
delineate
4)
in
McKinley
favorable
County
should
areas
f o r oil
and
to
completed
be
gas
accumulations.
Aggregate resources should
be mapped and sampled in greater
detail
prior
to
of such
extraction
materials.
5)
Examine rhyolites near Mt. Taylor for tin potential.
6)
Chemical samplingof high silica sandstones is required to
determine
7)
the
potential
for
high-silica
sand
resources.
Detailed studies of the mineralogy and chemistry
of clay
deposits
are
required
to
assess
their
potential.
An executive
Summaryof
Mineral-Resource Potential
of
County, Northwestern New Mexico
A Preliminary
8an
Juan
by
Virginia T. McLemore,
Ronald E’. Broadhead,
Kevin Cook,
William L. Chenoweth,
James M. Barker,
Gretchen Roybal,
Robert M, North,
Peter Copeland,
Mark R. Bowie,
John S. Hingtgen,
Kris Klein,
and Karen E. Brown
New
Mexico Bureau
of Mines and
Open-file Report232
Mineral
November 1986
Prepared in cooperation with
United StatesDepartment of Interior
Bureau of Land Management
Resources
ABSTRACT
A preliminary
Juan
County
mineral-resource
involves
analyses
potential
of
assessment
available
of
published
San
and
unpublished geologic, geochemical, geophysical, and economic data
and a brief field reconnaissance. Mineral-resource potential is
an
assessment
substantial
of
the
favorability a that
commodity
concentrations
in
a given
area
that
will
can
occur
be
in
exploited
under currentor future economic conditions.A classification of
or unknown is assigned. A high
high, moderate, low, very low,
mineral-resource
economic
data
potential
indicate
exists
an
in
areas
excellent
where
geologic
probability
that
and
economic
or low mineral-resource
mineral deposits occur there. Moderate
potential
exists
in
areas
where
the
data
indicate
a lesser
A
probability that economic mineral deposits occur.
classification of very
sufficient
low
information
potential
indicates
is
that
reserved
an
area
for
is
areas
where
€or
unfavorable
economic deposits. A classification of unknown mineral-resource
potential
to areas
assigned
is
geochemical,
otherwise
geophysical,
classify
an
where
and
either
economic
area
or where
any
necessary
geologic,
are inadequate to
data
other
classification
or very low) would be misleading. Some
(high, moderate, low,
areas
lack
have
of
usable
Energy
Juan
Coal,
not
evaluated
are
although
and
for
specific
commodities
because
data.
resources
county,
oil,
been
gas
the
other
are
most
important
commodities
currently
being
have
commodities
been
produced
in
San
produced.
and
have
A high resource
potentials in various parts of San Juan County.
high
o
potential exists locally
€or carbon dioxide, clay, helium, sand
and gravel, and limestone. Much
of the county has
a high
potential€or crushed
resource
A moderate
resource
and
potential
dimension
stone.
exists
€or uranium
in
the
Shiprock district and at the Boyd prospect.
A moderate potential
exists
locallyf o r humate.
Additional
geologic
mapping
suggested in areas
with
areas of aggregate
resources,
active
and
geochemical
claims,
and
in
at
the
areas
studies
Boyd
with
are
prospect,
in
potential
for
silica sand, clay, and zeolites. More drilling and quality
analyses
are
needed
to better
evaluate
the
coal
resource
potential. The significance of barium anomalies along the
Kirtland-Fruitland
to
be
examined.
contact
and
in
the
Nacimiento
Formation
needs
SUMMARY
As
is
studies
true
are
with
all
preliminary
necessary
to assess
investigations,
adequately
the
additional
mineral-resource
must be repotential in San Juan County. These assessments
evaluated as economic conditions, geologic interpretations, and
models change.
The
San
mineral-resource
Juan
County
is
€or various
potential
summarized
3 0 , 31, 32, 36, 37, 39, and 40.
commodities
in
and Figures 2 4 , 25, 27,
in 37
Table
The most important commodities
C02, helium,
are petroleum and coal. Aggregate resources,
limestone,
a high
clays,
potential
crushed
and
are
and
dimension
to support
needed
stone
resources
productionof the
energy resources. Additional work is necessaryto calcualate
reserves
and
cy€ these
resources
commodities
potential.
48
in
areas
of high
also
have
TABLE 6
Summary of mi-rieral--resource p o t e n t i a l i n S a n ~
county ( a f t e r McLemore e t a l . , 1 9 8 6 d )
Pattolsun
Tertlnry.
cr.t"c.o".,
Jurnsslc,
Pa"".ylva"lan.
Hlsalsslpplsn
unite
~~"O"1"".
snn J U O ~n a a h
hlgh
Deflnnee upllft
NlaeisslppInn,
Pe""syl"anla",
Permian.
Trlnaslc.
and Jurasalc
llnlts
coal
Frultlnnd
Formation
Frtlitlnnd Flald
Nnvn jo Fleld
Distl Fleld
Star Lake Field
Henefee Formatton
hlqh
hlgb
hlgh
hlgh to moderate
IOU
lloqbnck Fleld
Tondlens Fleld
Newcomb Fleld
moderate
Unknown
LOW
very IOU to low
Ur?."i"lU
(Vanndlun)
Jurnaalc rocks
moderate
Cretaceom rocks
Hestwater Cnnyon
Ilenber
moderate
""K"0W"
upper cretaceous
rocks
moderate
Geothermal
Pletale
varloua
(other than
formations
vsnadlun)
osritt nnd
FlUOrlte
Cretaceous rocks
unknown
cot
vnr1ot,a ",,It"
various ""Its
Clay
v a r i o u s ""Its
low to hlgh
Cz'uehed
various units
hlgh
modprnte to h l q h
noderats to hlgh
nnd
dlbenslon
stone
Hsllu"
vnrious units
various units
moderate to h l g h
moderate to hlgh
Hunats
same a* coal
low to moderate
Punlcs
Tertlnry and
auatsrnsry ",,Its
very Low to low
very low to IOU
Expanslbls
unknown or low
ahala
Linsmtone
Todlltollsestons
sanosteeDesutiful EIo.nta1"
a0UthWl)rd
entire
Salina
nlneral.
Sand and
grav.1
s111ca
Pennaylvanlan
Quntarnnry.
Tartlnry, and
Cretaceom unlta
llernoea Formation
sottca
varlous ""Its
sand
sulfur
zeolite
county
various units
Bruahy n n s l n
Chuska Sandstone
49
oounty
moderate to
IOW
low
hlgh
hlgh
RECOMMENDATIONS
Any
areas
Isopach
with
active
facies
formations
in
and
claims
should
be
structure-contour
San
Juan
County
examined 14).
(Fig.
maps
should
of
be
several
completed
to
delineate favorable areas for oil, gas, COz, and helium
accumulations.
Aggregate
detail
resources
should
priorto extraction
Chemical
sampling
determine
the
of
studiesof the
deposits
are
More
evaluate
the
especially
Gather
the
determine
Barker
and
reserves
outcrop
in
data
various
correlation
with
lower
deposits
greater
required
to
resources.
of
clay
potential.
needed
to better
for
several
fields,
to
coal
at
estimate
total
coal
fields.
the
Boyd
Fruitland
prospect
Formation
to
to
aid
potential.
is needed
data
in
sand
are
potential
needed
hole
in
field.
and
resource
is
chemistry
their
analyses
are
drill
uranium
high-silica
assess
resource
sampled
materials.
mineralogy
to
and
sandstones
studies
uranium
More
such
for
quality
hole
and
Stratigraphic
in
coal
drill
resources
and
mapped
high-silica
required
drilling
of
potential
Detailed
be
the
to
better
Westwater
delineate
Canyon
the
Member
on
Tocito
dome.
Investigate
the
Kirtland-Fruitland
in northern
San
significance
contact
Juan
and
and
of
in
barium
the
southern
anomalies
Nacimiento
Rio
Arriba
along
the
Formation
Counties.
11)
More testing of crushed stone resources is required to
determine their commercial capabilities.
12)
More analytical and field work is needed to determine the
resource potential for zeolites.
:.
An Executive Summary
of
A Preliminary Mineral-Resource Potential
of
Western Rio Arriba County. Notthwestern New
by
Virginia T. McLemore,
Ronald F. Broadhead,
Gretchen Roybal,
William L. Chenoweth,
James M. Barker,
Peter copeland,
Mark R. Bowie,
Kevin Cook,
John S . Hingtgen,
Kris Klein
and Karen B. Brown
"
New
Mexico
Bureau
of Mines andMineral Resources
Open-file Report2 3 3
December 1986
Prepared in cooperation with
United StatesDepartment of Interior
Bureau of Land Management
52
... .
!'
Mexico
ABSTRACT
A
preliminary
mineral-resource
potential
assessment
of
western Rio Arriba County involves analyses of available
published and unpublished geologic, geochemical, geophysical, and
economic data and a brief reconnaissance. Mineral-resource
potential
is
assessment
of the favorability thata
an
commodity
Will occur in substantial concentrations in a given area that can
be exploited under currentor future economic conditions. A
classification of high, moderate, low, very low, or unknown
is
assigned.
where
A high mineral-resource potential exists
in areas
geologic
and
economic
data
indicate
an
excellent
probability that economic mineral deposits occur there. Moderate
or low mineral-resource potential exists in areas where the data
indicate
occur.
a
lesser
probability
that
economic
mineral
deposits
A classification of very low potential is reservedfor
areas where sufficient information indicates that an area is
unfavorable for economic deposits. A classification of unknown
mineral-resource
potential
is
to areas where either
assigned
necessary geologic, geochemical, geophysical, and economic data
are
inadequateto otherwise
classifyan area
or
where
any
other
or very low) would be
classification (high, moderate, low,
misleading.
Some areas have not been evaluated
for specific
commodities
becauseof lack of useable data.
Oil
and
gas
are
currently
being
produced
in western Rio
Arriba County and the resource potential is high in Cretaceous,
Jurassic, and upper Paleozoic rocks. Clay in the Mesa Alta area
has a high resource potential. There isa high resource
p::.ential
area.
for crushed anddimension
the
throughout
the
entire
Limestone resource potentialis high in the Todilto
Limestone
in
stone
in
southeastern
A
moderate
resource
the
Chinle
Formation
Menefee
and
Arriba
potential
in
Fruitland
andheliuminthe
Formation.
Rio
the
County.
exists
for
Nacimiento
Formations
in
copper
and
Mountains,
the
San
silver
deep
in
JuanCo2
Basin,
SanJuanBasin,
and limestone in the
Madera
An unknown resource potential exists
for silica sand,
zeolites, and barite.
Additional
required
in
geologic
areas
with
mapping
active
and
geochemcial
claims,
areas
of
studies
are
aggregate
resources, and along the Kirtland-Fruitland contact for barium
resource potential. Isopach facies and structure-contour maps
and
additional
petroleum
tests
are
suggested
to enhance
evaluation of the petroleum resources. Detailed studies of the
mineralogy
and
chemistry
of clay
assess their potential.
deposits
are
coal
required
to fully
SUMMARY
As is true with all preliminary investigations, additional
studies
are
to assess
necessary
adequately
the
mineral-resource
potential in westernRio Arriba County. These assessments must
be re-evaluated as economic conditions, geologic interpretations,
and models change.
The mineral-resource
western
Rio
Arriba
potential
County
are
for
various
summarized
19, 20, 22, 25, 27, 28, 29, 30, and 31.
commodities
in
in 20Table
and Figures
The most important
commodity is petroleum. Limestone, clays, and crushed and
dimension
stone
resources
also
have
a
high
potential
and
needed to support productionof' the energy resources. Additional
work is necessaryto calculate
commodities in
reserves
areasof high potential.
and
resources
of these
are
Petroleum
western Rio nrrih,
mmty
hish
COR1
Wmero field
1.W
,F,n Juan
Panin
very
so11them Rio A r r i b
Uranium
Geotherml
"
"
lru to mlerate
lW
very lnr
NincellaneaLs
Ektals
Chinlr F o r w t i a ~
( c q p r , si.1vsr)
Nacinto Mnlntninn
mrite
stream swliments i n
Kirtlnnd-Fruitland
m l t J c t a n 1 Nacimimto
Formtion
northern S m Juan and
scntthern Rio Arrih,
Cumties
a 2
several t m i t s
Clays
Tertiary sediments
crunhed stone
sedimentary unitn of
Falmmic thrwgh
cenozoic age, awl
Cemtoic igneats
intrusives
hid,
Triassic Chinlc and
Jurassic Fhtrada
Sandstone
hiqh
Dimensirn
stone
u w r cretacw1s
unkm
10.4 to hiqh
Other rock u n i t s
llelium
derate
derate
c e n t r a l San Juan Basin
mXlerate
sandstones,mtrnda
Snn,ndstme, Triassic
Snmlatnlea, FermiRn
sadstones,wnnsylvanian
l i m s t o n e s and sandstones
and Missisaigpian
carbcnates
ilunnte
Lightweight
Aggregate
Limatme
very 10.4 to W
l
Cr"tacm1s MPnnfee
Formtion
shale Rtrata in
sedimntary volcanic
ana ignems intrusive
rocks
nmr ml.ce
Talilto
southeastern Rtldy area
liiqh
Madera
north flank oE Sirn Pedro
Mamtain
m7erate
Manma Shale
near Tierra AJmrilla
Lewis Shale
1W
W
I
Mica
Precamlxian rocks
northeastern p r t of
Son Juan &win
W
l
saline
Permian
e n t i r e n t W area
very la,
sand and
Gravel
T e r t i a r y and
waternary
s i l i c a saw3
Permian to T e r t i a r y
Zeolites
Jurassic
:
1W
RECOMMENDATIONS
, !
Any areas with active claims should be examined (Fig.
11).
Isopach facies and structure-contour maps
of several
formations
in
Rio
Arriba
County
should
be
completed
to
delineate favorable areasfor oil and gas accumulations.
3)
Analyze
Mancos
the
thermal
Shales
in
maturity
and
kerogen
subsurface
of western
the
content
of marine
Rio
Arriba
County.
4)
Drill
more
wells inthe Paleozoic sectionofthe
Basin
(western
Rio
County)
to better
Arriba
reservoir
qualityof Paleozoic
Test
Pennsylvanian
to
the
determine
the
Drill in the
Paleozoic
dependent
porosity
Aggregate
resources
detail
Examine
NURE
document
units.
section
reservoir
SanJuan
Rio Arriba County
western
in
quality
of
Pennsylvanian
section
to establish
units.
depositionally
zonations.
should
be
mapped
and
sampled
in
greater
priorto extraction of such materials.
the
belt
of anomalous
stream-sediment
contact
in
northern
barium
samples
values
along
the
San
Juan
'and southern
the
mineralogy
found
in the
Kirtland-Fruitland
Rio
Arriba
Counties.
Detailed
studies
deposits
are
Exploration
unknown
are
of
and
of clay
chemistry
requiredto fully assess their potential.
and
of expansible
testing
needed
to delineate
any
shale
ores.
regions
rated
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