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GEOCHEMISTRY
&
GEOCHRONOLOGY
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Lithogeochemistry
for Exploration and Research
All
elements are in ppm except where noted.
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INAA
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INAA
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WRA-ICP
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Trace Element
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WRA + trace
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Trace Element
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WRA + trace
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WRA-XRF
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XRF
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XRF Pressed Pellet
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Total IDENT
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Total Ident
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4A-expl.
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4A-research
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4B
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4B2-std
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4Litho
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4B2 research
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4Litho
research
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4C
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4C Laterite
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4C1
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4E expl.
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4E reserach
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Al2O3
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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CaO
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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Cr2O3
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0.01%
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0.01%
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CuO
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0.01%
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Fe2O3
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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K2O
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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MgO
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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MnO
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0.001%
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0.001%
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0.001%
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0.001%
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0.01%
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0.01%
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0.01%
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Na2O
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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NiO
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0.01%
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P2O5
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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SiO2
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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TiO2
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0.001%
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0.001%
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0.001%
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0.01%
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0.01%
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0.005%
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0.005%
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LOI
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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0.01%
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Ag
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5
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2
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(0.5+)
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0.5
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0.5
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0.5
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0.5
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0.5
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0.5
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As
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2
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1
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(0.5++)
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5 (0.5++)
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5 (0.5++)
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5 (0.5++)
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5 (0.5++)
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2
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1
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Au
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5 ppb
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2 ppb
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(2 ppb++)
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(2 ppb++)
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(2 ppb++)
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(2 ppb++)
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(2 ppb++)
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5 ppb
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1 ppb
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Ba
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100
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20
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3
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3
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3
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3
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3
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5*
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3
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1
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Be
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1
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1
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1
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1
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1
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Bi
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(10+)
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0.4
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0.4
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0.1
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0.1
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10
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10 (0.1+++)
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Br
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1
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0.5
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(0.5++)
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(0.5++)
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(0.5++)
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(0.5++)
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(0.5++)
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1
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0.5
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Ca
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0.5%
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0.2%
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Cd
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(0.5+)
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(0.5+)
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(0.5+)
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(0.5+)
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(0.5+)
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0.5
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0.5
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Co
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1
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0.1
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(1++)
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1
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1
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1
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1
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5**
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1
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0.1
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Cr
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2
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0.5
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(5++)
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20 (5++)
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20 (5++)
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20 (5++)
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20 (5++)
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5**
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1
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0.5
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Cs
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0.5
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0.2
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(1++)
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0.5
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0.5
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0.1
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0.1
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0.5
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0.2 (0.1+++)
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Cu
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(1+)
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10 (1+)
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10 (1+)
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10 (1+)
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10 (1+)
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5**
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1
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1
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Fe
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0.02%
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0.005%
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(0.01%++)
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(0.01%++)
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Ga
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1
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1
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1
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1
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5*
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(5***)
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(5***) (1+++)
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Ge
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1
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1
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0.5
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0.5
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(0.5+++)
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Hf
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0.5
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0.2
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(1++)
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0.2
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0.2
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0.1
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0.1
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0.5
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0.2 (0.1+++)
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In
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0.2
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0.2
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0.1
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0.1
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(0.1+++)
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Ir
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5 ppb
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2 ppb
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(5 ppb++)
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(5 ppb++)
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(5 ppb++)
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(5 ppb++)
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(5 ppb++)
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5 ppb
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1 ppb
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Mo
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5
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2
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(5++)
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2
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2
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2
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2
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5
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2
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Na
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0.01%
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0.001%
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(0.01%++)
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(0.01%++)
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Nb
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1
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1
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0.2
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0.2
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1*
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(2***)
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(2***) (0.2+++)
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Ni
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100
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50
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(1+)
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20 (1+)
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20 (1+)
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20 (1+)
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20 (1+)
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4**
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1
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1
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Pb
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(5+)
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5
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5
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5
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5
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5**
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5
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5
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Rb
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20
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10
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(20++)
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2
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2
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1
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1
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2*
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20 (2***)
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10 (2***) (1+++)
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S
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(100+)
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(100+)
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(100+)
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(100+)
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(100+)
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Sb
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0.2
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0.1
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(0.2++)
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0.5 (0.2++)
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0.5 (0.2++)
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0.2
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0.2
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0.2
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0.1
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Sc
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0.1
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0.01
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1
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(0.1++)
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1 (0.1++)
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(0.1++)
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1 (0.1++)
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0.1
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0.01
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Se
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3
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0.5
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(3++)
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(3++)
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(3++)
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(3++)
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(3++)
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3
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0.5
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Sn
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1
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1
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1
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1
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5
|
(5***)
|
(5***) (1+++)
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Sr
|
500
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100
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2
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2
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2
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2
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2
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