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CYANIDE EXTRACTABLE GOLD CODE
ELEMENT
LIMIT(S)
DESCRIPTION
GE_MBLA65V30 GE_MBLI64V30 GE_BLE61K GE_ BLE61NL
Au Au Au Au
0.03 - 100 ppm 0.03 - 100 ppm 0.01 - 100 ppm 1 - 10,000 ppb
Hot, 30 g, Mini cyanide leach, AAS finish Cold, 30 g, Mini cyanide leach, ICP finish
500 g, Active cyanide leach, Solvent extraction, AAS finish 2000 g, Active cyanide leach, Solvent extraction, AAS finish
The Leachwell™ tab is a proprietary product and Leachwell™ is a patented process. Accelerated cyanide leach techniques are used to determine bulk leachable gold in exploration samples using modified cyanide leach (Leachwell™). The large sample is mixed with water and Leachwell™ tabs and tumbled. The gold is extracted into DIBK and analyzed. Other elements (Cu, Ag, Pb and Zn) are also partially extracted by the cyanide leach and can be measured on request.
ACCELERATED CYANIDE LEACH FOR GOLD CODE ELEMENT
LIMIT(S)
DESCRIPTION
GE_LWE69J GE_LWE69K GE_LWE69L GE_LWE69M GE_LWE69N
Au Au Au Au Au
0.01 - 1,000 ppm 0.01 - 1,000 ppm 0.01 - 1,000 ppm 0.01 - 1,000 ppm 0.01 - 1,000 ppm
200 g, Accelerated cyanide leach, AAS finish 500 g, Accelerated cyanide leach, AAS finish 800 g, Accelerated cyanide leach, AAS finish 1000 g, Accelerated cyanide leach, AAS finish 2000 g, Accelerated cyanide leach, AAS finish
Note: These methods are also available with ICP-MS finish.
ORE-GRADE ANALYSIS INSTRUMENTAL AND GRAVIMETRIC ANALYSIS CODE ELEMENT
LIMIT(S)
DESCRIPTION
GO_FAA30V10 GO_FAA50V10 GO_FAP30V10 GO_FAP50V10 GO_FAI30V10 GO_FAI50V10 GO_FAG30V GO_FAG50V GO_FAG32V
Au Au Au Au
0.01 - 100 ppm 0.01 - 100 ppm 0.01 - 100 ppm 0.01 - 100 ppm 0.01 - 100 ppm 0.01 - 100 ppm 0.5 - 10,000 ppm 0.5 - 10,000 ppm 0.01 - 100 ppm 10 - 10,000 ppm 0.01 - 100 ppm 10 - 10,000 ppm 0.5 - 10,000 ppm 10 - 10,000 ppm
30 g, Fire assay, AAS finish 50 g, Fire assay, AAS finish 30 g, Fire assay, MP-AES finish 50 g, Fire assay, MP-AES finish 30 g, Fire assay, ICP-OES finish 50 g, Fire assay, ICP-OES finish 30 g, Fire assay, gravimetric finish 50 g, Fire assay, gravimetric finish
Photon Assay Photon Assay is a non-destructive technology uses high-energy x-rays to hit samples of up to 500g, enabling rapid and enhanced analysis of gold, silver, copper and other elements. The technology is measurably safer, faster and more environmentally friendly than previous assay processes.
Au ** Au **
Au Au Au Ag Au Ag Au Ag
30 g, Fire assay, AAS finish (Au) gravimetric finish (Ag)
CODE
ELEMENT
LIMIT(S)
DESCRIPTION
GO_FAG52V
50 g, Fire assay, AAS finish (Au) gravimetric finish (Ag)
PAAU02 PAAU02H PAAU02HH
Au Au Au
0.15 - 350 ppm 100 - 3500 ppm
PhotonAssay, 2-cycle Gold services 500 PhotonAssay, 2-cycle Gold services 500 PhotonAssay, 2-cycle Gold services 500
GO_FAG33V
30 g, Fire assay, gravimetric finish (Au, Ag)
1,000 - 10,000 ppm
** Pt and Pd can be included.
GOLD BY ACID DIGESTION (AQUA REGIA) CODE ELEMENT
LIMIT(S)
DESCRIPTION
GE_ARE1V50 GE_ARE2V25 GE_ARE2V50 GE_ARMV25 GE_ARMV50
Au Au Au
1 - 800 ppb
50 g, Aqua regia digest, DIBK extraction, AAS finish 25 g, Aqua regia digest, DIBK extraction, AAS finish 50 g, Aqua regia digest, DIBK extraction, AAS finish
0.01 - 100 ppm 0.01 - 100 ppm
Au* Au*
1 - 500 ppb 1 - 500 ppb
25 g, Aqua regia digest, ICP-MS finish 50 g, Aqua regia digest, ICP-MS finish
Note: *Additional elements are available on request Cyanide leach procedures are used to enhance small gold anomalies during exploration and to monitor gold extraction efficiencies in metallurgical applications. Bulk Leach Extractable Gold (BLEG) is a cyanide-based partial leach procedure that uses a large sample size (0.5 kg to 5 kg). It is used to enhance small gold anomalies during exploration. The cyanide leachate solution is extracted into an organic solvent and analyzed. Our active cyanide leach packages are available with a variety of sample sizes, detection limits and finishing methods. The mini
cyanide leach package is available for smaller sample sizes, allowing for faster TAT than active cyanide leach. Other elements are also partially extracted with the cyanide leach and can be measured on request.
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