PROCESS CONTROL AND CONCENTRATE-GRADE ANALYSIS
Instrumental and gravimetric analysis CODE
Gravimetric analysis CODE
ELEMENT LIMIT(S)
DESCRIPTION
ELEMENT LIMIT(S)
DESCRIPTION
GC_FAA30V10/FAA50V10
Au Au Au
0.01 - 1,000 ppm 0.01 - 1,000 ppm
30/50 g, Fire assay, AAS finish 30 g, Fire assay, AAS finish 30 g, Fire assay, gravimetric finish
GO_FAG32V
Au Ag Au Ag Au
0.01 - 100 ppm 10 - 100 ppm 0.5 - 10,000 ppm 10 - 10,000 ppm 0.01 - 100 ppm
30 g, Fire assay, AAS finish (Au) gravimetric finish (Ag)
GC_FAG32V GC_FAG33V
≥ 0.5 ppm
GO_FAG33V
30 g, Fire assay, gravimetric finish (Au, Ag)
GO_FAG52V
50 g, Fire assay, AAS finish (Au), gravimetric finish (Ag)
Gold in process solutions CODE
ELEMENT LIMIT(S)
DESCRIPTION
CONTROL AND CONCENTRATE-GRADE ANALYSIS
GC_FSA84T GC_FSI84T*
Au Au
≥ 0.01 mg/L ≥ 0.01 mg/L
Solution, Fire assay, AAS finish Solution, Fire assay, ICP-OES finish
Instrumental and gravimetric analysis CODE
ELEMENT LIMIT(S)
DESCRIPTION
These methods are also applicable to cyanide liquors. *Pt and Pd can be added to GC_FSI84T.
GC_AAS43V100
Ag Au Ag Au Ag Ag Ag
1 - 1,000 ppm
Variable wt, 4-acid digest, AAS finish
GC_FAG32V
0.01 - 1,000 ppm
30 g, Fire assay, AAS finish (Au) gravimetric finish (Ag)
Gold in cyanide liquors CODE
≥ 10 ppm ≥ 0.5 ppm ≥ 10 ppm
ELEMENT LIMIT(S)
DESCRIPTION
GC_FAG33V
30 g, Fire assay, gravimetric finish (Au, Ag)
GC_AAS82T GC_ AAS82X
Au Au
≥ 0.05 mg/L ≥ 0.001 mg/L
CN solution, AAS finish
Solvent extraction, DIBK, AAS finish
GC_ACA22D100V
2 - 2,000 ppm 0.01 - 99.5%
Carbon, 1 g, ash, acid digest, extract, AAS finish 100-500 mg, Fire assay, gravimetric finish
GC_BUL36V
Gold in carbon CODE GC FAA01V100 GC ACA22D100V
EXPLORATION GRADE ANALYSIS Gold, platinum, palladium and other precious metals
ELEMENT LIMIT(S)
DESCRIPTION
Au Au Au
5 - 20,000 ppm 5 - 250,000 ppm
1 - 2 g, Fire assay, AAS finish 1 g, Ash, acid digest, AAS finish 1 - 2 g, Fire assay, gravimetric finish
Gold, platinum and palladium CODE
GC_FAG01V
≥ 7.5 ppm
ELEMENT LIMIT(S)
DESCRIPTION
GE_FAI30V5/FAI50V5
Au
1 - 10,000 ppb
30/50 g, Fire assay, ICP-MS finish
Gold bullion CODE
Pt
10 - 10,000 ppb 1 - 10,000 ppb 1 - 2,000 ppb 0.5 - 2,000 ppb 0.5 - 2,000 ppb 5 - 10,000 ppb 10 - 10,000 ppb 5 - 10,000 ppb
ELEMENT LIMIT(S)
DESCRIPTION
Pd Au
GC_BUL36V
Au
0.5 - 99.5%
100 - 500 mg, Fire assay, gravimetric finish
GE_FAM30V5/FAM50V5
30/50 g, Fire assay, ICP-MS finish
Pt
Pd Au
Acid digestion - instrumentation CODE Silver EXLPORATION GRADE ANALYSIS
GE_FAI31V5/FAI51V5
30/50 g, Fire assay, ICP-OES finish
Pt
Pd
ELEMENT LIMIT(S)
DESCRIPTION
ORE-GRADE ANALYSIS
GE_AAS22E50 GE_AAS33E50 GE_AAS42E50
Ag Ag Ag
0.3 - 100 ppm 0.3 - 100 ppm 0.3 - 100 ppm
2 g, 2-Acid digest, AAS finish 2 g, 3-Acid digest, AAS finish 2 g, 4-Acid digest, AAS finish
Gold, platinum and palladium CODE
ELEMENT LIMIT(S)
DESCRIPTION
GO_FAI30V10/FAI50V10
Au
0.01 - 100 ppm 0.01 - 100 ppm 0.01 - 100 ppm
30/50 g, Fire assay, ICP-OES finish
It is recommended that mineralized samples with Ag >30 ppm are analyzed using the GO_AAS21C50 method below. Silver (Ag) can also be analyzed in many multi-element packages.
Pt
Pd
ORE-GRADE ANALYSIS
Acid digestion - instrumentation CODE
ELEMENT LIMIT(S)
DESCRIPTION
GO_AAS21C50
Ag
1 - 300 ppm
0.5 g, 2-Acid digest, AAS finish
34
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