Whole and Trace Element Geochemistry Summary of altered and mineralized samples of the Kurupung
Batholith.
In an effort to document geochemical signatures and variations across the batholith and mineralized
zones, selected sample suite was submitted to ActLabs for research grade whole rock, trace element,
and REE geochemical analyses. The samples submitted ranged from unaltered Kurupung into Kmetasomatized domains through to the albite alteration associated with the uranium mineralization.
This summary focuses on the geochemical signatures of the alkaline signatures of the alteration zone
associated with late stage K-Na metasomatism. The following samples were selected to capture: (1) the
initiation of K-spar growth; (2) transition into K-metasomatism with blocky K-spar over the metamorphic
fabric; (3) initiation of Na-metasomatism with white albite rinds on K-spar; (4) complete albitization
defined by blocky red albite; and (5) intense zircon and U-mineraralization.
ARN094 102.3
ARW030 208.8
ARN048 65.5
ARS029 83.5
ARS094 151.80
ARS090 209.25
ARS043 154
ACCORI NORTH C 011 123.0
ARW008 106.8
SAMPLE C1 (COGEMA CORE)
SAMPLE C5 (COGEMA CORE)
Minor secondary K-spar growth over
Kurupung
Relatively fresh Kurupung with
minor secondary K-spar growth
Blocky feldspar over fabric
Blocky feldspar over fabric
Secondary K-spar
White rinds on K-spar
Rinding of K-spar by albite
Albitized cataclasite
Blocky red albite
Albitite
Albitite
Initiation of K-spar growth
Initiation of K-spar growth
Transition into K-metasomatism
Transition into K-metasomatism
Transition into K-metasomatism
Initiation of Na-metasomatism
Initiation of Na-metasomatism
Complete albitization
Complete albitization
Complete albitization
Complete albitization-Zr-Umineralization
U3O8 Corp., routinely submit mineralized and altered samples for whole rock and trace element
geochemical analysis. A database of xxx analyses from Aricheng South, Aricheng North, and Accori were
provided to me for geochemical classification, characterization, and comparison with the limited
samples I submitted for analysis. The purpose of my sample suite was to characterize geochemical
signatures from the initiation of K-metasomatism to albitization and Zr-U-mineralization. The data
provided by U3O8 Corp. and analyses of rocks I submitted have been plotted on a series of trace
element, REE plots, as well as binary plots used to illustrate albitization of K-spar and increase of Ucontent with albitization.
Trace Element Plots:
The rocks I submitted for analysis were plotted on the MORB normalized diagram of Bevins et
al., 1984.
10
10
10
10
3
10
Initiation of K-spar growth
2
10
1
10
0
10
-1
10
10
10
Initiation of K-spar growth
1
0
10
Rb Ba K2OTh Ta
10
Blocky K-spar over fabric
2
-1
10
10
3
Sr La Ce Nb Nd P2O5
Hf
Zr
Eu TiO2Tb Y
Yb Ni
Cr
4
Rb Ba K2OTh Ta
10
Initiation of Na-metasomatism
Sr La Ce Nb Nd P2O5
Hf
Zr
Eu TiO2Tb Y
Yb Ni
Cr
4
Complete albitization
3
10
2
10
1
10
0
10
-1
3
2
1
0
-1
10
10
Rb Ba K2OTh Ta
Sr La Ce Nb Nd P2O5
Hf
Zr
10
10
10
10
Yb Ni
Cr
Rb Ba K2OTh Ta
Sr La Ce Nb Nd P2O5
Hf
Zr
Eu TiO2Tb Y
Yb Ni
Cr
2
1
0
-1
10
Eu TiO2Tb Y
3
Zr-U-mineralized sample
Sr La Ce Nb Nd P2O5
Hf Zr Eu
Initiation
of K-spar growth
Rb Ba K2OTh Ta
TiO2Tb Y
Yb Ni
Cr
The spider plots entitled “initiation of K-spar growth” and “blocky K-spar over fabric” show similar
signatures with a positive Th anomaly, and negative Ta, Sr, Ti anomalies. The spider plots entitled
“initiation of Na-metasomatism” and “complete albitization” share similar signatures with a strong
negative K2O, Sr, TiO2 anomalies. The “Zr-U-mineralized sample” shows strong negative K2O anomaly,
and a very strong positive Zr anomaly. The marked Ti anomaly may be related to concentration in late
magnetite/hematite??
The data was also plotted on the condrite normalized multi-element diagram of Wood et al., 1979b.
10
10
10
10
3
10
2
10
1
10
0
10
-1
1
0
10
-2
-2
10
10
-3
10
Initiation of K-spar growth
Rb K
10
2
-1
10
10
3
Th Ta Nb Ba La Ce Sr Hf Zr P
Blocky K-spar over fabric
-3
10
Ti Sm Y
Lu Sc V
Mn Fe Cr Co Ni
3
Rb K
10
2
10
1
10
0
10
-1
10
-2
10
10
10
Mn Fe Cr Co Ni
2
1
0
-2
10
-3
Lu Sc V
-1
10
10
Th Ta Nb Baof
La K-spar
Ce Sr Hf growth
Zr P Ti Sm Y
Initiation
3
Initiation of Na-metasomatism
Rb K
Th Ta Nb Ba La Ce Sr Hf Zr P
Ti Sm Y
-3
10
Lu Sc V
10
10
10
10
10
Mn Fe Cr Co Ni
Complete albitization
Rb K
Th Ta Nb Ba La Ce Sr Hf Zr P
4
3
2
1
0
-1
10
-2
10
Zr-U-mineralized sample
-3
10
Rb K
Th Ta Nb Ba La Ce Sr Hf Zr P
Ti Sm Y
Lu Sc V
Mn Fe Cr Co Ni
Ti Sm Y
Lu Sc V
Mn Fe Cr Co Ni
The data is also presented here on the REE condrite normalized plot of Nakamura, 1974.
10
3
10
3
Blocky K-spar over fabric
Initiation of K-spar growth
Initiation of K-spar growth
10
10
10
2
10
1
10
0
10
La
10
Ce
Pr
Nd
Pm
Sm
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
2
1
0
La
Lu
10
3
Ce
Pr
Nd
Pm
Sm
Eu
10
10
10
1
10
0
10
Ce
Pr
Nd
Pm
Sm
Eu
Gd
Tb
Dy
10
10
10
Ho
Er
Tm
Yb
La
Ce
Pr
Nd
Pm
Sm
1
Nd
Tm
Yb
Lu
0
Lu
2
Pr
Er
1
Zr-U-mineralized sample
Ce
Ho
2
3
La
Dy
Complete albitization
2
La
Tb
3
Initiation of Na-metasomatism
10
Gd
Pm
Sm
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
Lu
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
Lu
The following multi-element plots were compiled using the dataset provided by U3O8 Corp. The
analyses pertain to prospective areas of mineralization (ARS, ARN, ACCORI porspects).
10
10
10
10
3
2
1
0
10
-1
10
-2
10
Bevins et al, 1984
ARS SAMPLES
Rb Ba K2OTh Ta
10
Sr La Ce Nb Nd P2O5
Hf
Zr
Eu TiO2Tb Y
Yb Ni
Cr
10
10
3
2
1
0
-1
10
Bevins et al, 1984
ARN SAMPLES
Rb Ba K2OTh Ta
10
10
10
10
3
2
1
0
-1
10
Bevins et al, 1984
ACCORI SAMPLES
Rb Ba K2OTh Ta
Sr La Ce Nb Nd P2O5
Hf
Zr
Eu TiO2Tb Y
Yb Ni
Cr
Sr La Ce Nb Nd P2O5
Hf
Zr
Eu TiO2Tb Y
Yb Ni
Cr
The company dataset was also plotted on the multi-element plot of Wood et al., 1979b on a prospect
basis (ARS, ARN, and ACCORI)
10
10
10
10
10
4
3
2
1
0
-1
10
Wood et al., 1979b
ARS SAMPLES
-2
10
-3
10
Rb K
Th Ta Nb Ba La Ce Sr Hf Zr P
Ti Sm Y
Lu Sc V
Mn Fe Cr Co Ni
10
10
10
10
10
4
3
2
1
0
-1
10
-2
10
-3
10
Wood et al., 1979b
ARN SAMPLES
Rb K
10
10
10
10
10
4
3
2
1
0
-1
10
-2
10
-3
10
Wood et al., 1979b
ACCORI SAMPLES
Rb K
Th Ta Nb Ba La Ce Sr Hf Zr P
Ti Sm Y
Lu Sc V
Mn Fe Cr Co Ni
Th Ta Nb Ba La Ce Sr Hf Zr P
Ti Sm Y
Lu Sc V
Mn Fe Cr Co Ni
The company dataset was also plotted on the multi-element plot of Nakamura, 1974 on prospect basis
(ARS, ARN, and ACCORI).
10
10
10
10
3
2
1
0
-1
10
Nakamura, 1974
ARS SAMPLES
La
Ce
Pr
Nd
Pm
Sm
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
Lu
10
10
10
10
3
2
1
Nakamura, 1974
ARN SAMPLES
0
La
10
10
10
10
3
2
1
0
Nakamura, 1974
ACCORI SAMPLES
La
Ce
Pr
Nd
Pm
Sm
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
Lu
Ce
Pr
Nd
Pm
Sm
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
Lu