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 2.11 0.17 g/t
Au CL 2.04 0.34 g/t
Cu 4A_MICP 56 4 ppm
C Combustion/LECO 1.98 0.12 %
S Combustion/LECO 0.56 0.06 %
S 4A_MICP 0.56 0.06 %
LOI LOI 8.38 0.97 %
SG SG 2.81 0.051 Dimensionless
Al 4A_MICP 7.41 0.26 %
Ba 4A_MICP 740 20 ppm
Be 4A_MICP 2 0.3 ppm
Ca 4A_MICP 4.31 0.15 %
Co 4A_MICP 20 2 ppm
Cr 4A_MICP 131 23 ppm
Fe 4A_MICP 3.86 0.085 %
Ga 4A_MICP 19 3 ppm
K 4A_MICP 1.66 0.091 %
Mg 4A_MICP 2.22 0.090 %
Mn 4A_MICP 673 27 ppm
Na 4A_MICP 3.34 0.24 %
Ni 4A_MICP 64 5 ppm
P 4A_MICP 1607 127 ppm
Pb 4A_MICP 9 4 ppm
Sb 4A_MICP 15 5 ppm
Sr 4A_MICP 1347 107 ppm
V 4A_MICP 95 2 ppm
Y 4A_MICP 12 0.7 ppm
Zn 4A_MICP 72 9 ppm
Zr 4A_MICP 84 16 ppm
Major Oxides Certified Concentrations (at two Standard Deviations)
Al2O3 7XRF 14.63 0.75 %
CaO XRF 6.01 0.28 %
Fe2O3 XRF 5.61 0.067 %
K2O XRF 2.03 0.068 %
MgO XRF 3.85 0.035 %
Na2O XRF 4.80 0.36 %
P2O5 XRF 0.37 0.02 %
SiO2 XRF 52.69 1.3 %
TiO2 XRF 0.58 0.02 %
