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Battery metals/Critical metals
MINERAL SELECTIVE COPPER METHODS CODE(S)
LIMIT(S)
DESCRIPTION
GC_AAS70D200 GC_AAS71C50 GC_AAS74C50 GC_AAS75D100 GC_AAS01D250 GC_ASQ01D50 GC_ASQ02D100 GC_ASQ03D50
≥ 0.002% ≥ 0.001% ≥ 0.001% ≥ 0.001% ≥ 0.001% ≥ 0.001%
Cu oxide method, citric acid leach, AAS
Minerals and metals that are supporting climate change and the energy transition Copper Copper can occur as oxide, sulphide and metallic forms in mineral deposits and metallurgical products so there are a variety of different analytical techniques available. EXPLORATION GRADE COPPER METHODS CODE(S) LIMIT(S) DESCRIPTION GE_ICP21B20 0.5 ppm - 1% Aqua regia – ICP-OES GE_IMS21B20 0.5 ppm - 1% Aqua regia – ICP-MS GE_ICP40Q12 0.5 ppm - 1% 4-Acid digest – ICP-OES GE_ICP90A50 10 ppm - 5% Fusion – ICP-OES
Cu H 2 SO 4 soluble, AAS Cu acetic acid soluble, AAS
CN soluble Cu, AAS
Metallic Cu, AgNO 3 digest, AAS
Sequential Cu leach (H 2 SO 4 soluble Cu, Cyanide soluble Cu, residual Cu), AAS
ORE-GRADE COPPER METHODS CODE(S)
LIMIT(S)
DESCRIPTION
GO_ICP21B100 GO_ICP42Q100 GO_ICP90Q100
0.01 - 30% 0.01 - 30% 0.01 - 30%
Aqua regia digest – ICP-OES 4-Acid digest – ICP-OES
Fusion – ICP-OES
CONCENTRATE-GRADE COPPER METHODS CODE(S)
LIMIT(S) 15 - 60% 5 - 95%
DESCRIPTION
GC_CON13V GC_CON03V*
Short iodide titration Electrogravimetry
* These methods can be done at party or umpire quality.
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