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 0.342 0.050g/t
Au CL 0.325 0.060g/t
Ag 4A_MICP 0.1 0.03ppm
Cu 4A_MICP 57 3ppm
C Combustion/LECO 9729 486ppm
S Combustion/LECO 0.20 0.03%
S 4A_MICP 0.20 0.01%
SG SG 2.80 0.14Dimensionless
Al 4A_MICP 7.61 0.72%
Ba 4A_MICP 878 45ppm
Be 4A_MICP 2 0.6ppm
Bi 4A_MICP 0.08 0.03ppm
Ca 4A_MICP 3.66 0.22%
Cd 4A_MICP 0.07 0.04ppm
Ce 4A_MICP 86 9ppm
Co 4A_MICP 18 1ppm
Cr 4A_MICP 107 24ppm
Cs 4A_MICP 3 0.09ppm
Fe 4A_MICP 3.34 0.35%
Ga 4A_MICP 20 4ppm
Hf 4A_MICP 2 0.3ppm
In 4A_MICP 0.04 0.03ppm
K 4A_MICP 1.94 0.12%
La 4A_MICP 41 4ppm
Li 4A_MICP 24 2ppm
Mg 4A_MICP 1.88 0.056%
Mn 4A_MICP 577 46ppm
Nb 4A_MICP 10 1ppm
Ni 4A_MICP 54 4ppm
P 4A_MICP 1225 76ppm
Rb 4A_MICP 60 3ppm
Sb 4A_MICP 4 1ppm
Sc 4A_MICP 10 0.4ppm
Sr 4A_MICP 1133 56ppm
Th 4A_MICP 6 0.7ppm
Ti 4A_MICP 2900 148ppm
Tl 4A_MICP 0.3 0.01ppm
U 4A_MICP 2 0.08ppm
V 4A_MICP 88 5ppm
W 4A_MICP 14 3ppm
Y 4A_MICP 12 0.4ppm
Zn 4A_MICP 66 5ppm
Zr 4A_MICP 77 13ppm
Major Oxides Certified Concentrations (at two Standard Deviations)
Al2O3 XRF 15.14 0.52%
CaO XRF 5.08 0.20%
Fe2O3 XRF 4.87 0.087%
K2O XRF 2.28 0.14%
MgO XRF 3.26 0.15%
Na2O XRF 4.65 0.16%
P2O5 XRF 0.28 0.02%
SiO2 XRF 58.45 0.60%
SO3 XRF 0.49 0.02%
TiO2 XRF 0.52 0.02%
