Description
DOWNLOAD AMIS CERTIFICATE (PDF)
Origin of Material
They are from the Newmont Ahafo gold mine which is located along the Sefwi Volcanic Belt, in the Ahafo region approximately 307 km from the nation’s capital, Accra.
Approximate Mineral and Chemical Composition
Gold typically occurs as native gold, associated with pyrite. Alteration associated with the deposits includes silicification, albitization, pyritization, and carbonation.
Summary Statistics
Recommended Concentrations and Limits (at two Standard Deviations)
Certified Concentrations
Au Pb Collection 0.068 0.014g/t
Au CL 0.061 0.018g/t
Cu 4A_MICP 15 1ppm
C Combustion/LECO 3859 403ppm
S 4A_MICP 0.055 0.009%
SG SG 2.69 0.066Dimensionless
Al 4A_MICP 2.25 0.11%
Ba 4A_MICP 214 14ppm
Be 4A_MICP 0.5 0.02ppm
Ca 4A_MICP 9491 589ppm
Ce 4A_MICP 23 4ppm
Co 4A_MICP 5 0.4ppm
Cr 4A_MICP 30 9ppm
Cs 4A_MICP 1 0.1ppm
Fe 4A_MICP 1.01 0.037%
Ga 4A_MICP 5 1ppm
K 4A_MICP 5869 226ppm
La 4A_MICP 13 0.8ppm
Li 4A_MICP 7 0.7ppm
Mg 4A_MICP 4757 526 ppm
Mn 4A_MICP 174 13ppm
Mo 4A_MICP 0.4 0.05ppm
Na 4A_MICP 8555 259 ppm
Nb 4A_MICP 4 1ppm
Ni 4A_MICP 14 1ppm
P 4A_MICP 272 17ppm
Pb 4A_MICP 3 0.4ppm
Rb 4A_MICP 19 0.8ppm
Sb 4A_MICP 1 0.1ppm
Sc 4A_MICP 3 0.2ppm
Sr 4A_MICP 203 21ppm
Ta 4A_MICP 2 0.8ppm
Th 4A_MICP 3 0.5ppm
Ti 4A_MICP 902 113ppm
Tl 4A_MICP 0.1 0.02ppm
U 4A_MICP 0.9 0.09ppm
V 4A_MICP 28 1ppm
W 4A_MICP 3 1ppm
Y 4A_MICP 4 0.3ppm
Zn 4A_MICP 17 4ppm
Zr 4A_MICP 40 6ppm
Major Oxides Certified Concentrations (at two Standard Deviations)
Al2O3 XRF 4.25 0.19%
CaO XRF 1.31 0.018%
Fe2O3 XRF 1.39 0.016%
K2O XRF 0.71 0.03%
MgO XRF 0.77 0.03%
P2O5 XRF 0.057 0.01%
SiO2 XRF 88.55 0.71%
TiO2 XRF 0.17 0.01%
