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 0.650 0.12 g/t
Au CL 0.670 0.083 g/t
Cu 4A_MICP 52 3 ppm
C Combustion/LECO 1.37 0.084 %
S Combustion/LECO 0.24 0.03 %
S 4A_MICP 0.24 0.01 %
LOI LOI 6.61 0.51 %
SG SG 2.79 0.28 Dimensionless
Al 4A_MICP 7.69 0.25 %
Ba 4A_MICP 862 19 ppm
Be 4A_MICP 2 0.3 ppm
Ca 4A_MICP 3.64 0.13 %
Co 4A_MICP 18 1 ppm
Cr 4A_MICP 110 3 ppm
Fe 4A_MICP 3.53 0.42 %
Ga 4A_MICP 19 1 ppm
K 4A_MICP 1.89 0.09 %
Li 4A_MICP 19 4 ppm
Mg 4A_MICP 1.89 0.067 %
Mn 4A_MICP 598 27 ppm
Mo 4A_MICP 0.8 0.4 ppm
Na 4A_MICP 3.12 0.24 %
Ni 4A_MICP 56 5 ppm
Pb 4A_MICP 10 0.9 ppm
Sb 4A_MICP 6 2 ppm
Sr 4A_MICP 1040 100 ppm
Ti 4A_MICP 2610 495 ppm
V 4A_MICP 90 6 ppm
Zn 4A_MICP 65 7 ppm
Zr 4A_MICP 81 20 ppm
Major Oxides Certified Concentrations (at two Standard Deviations)
Al2O3 7XRF 15.04 0.50 %
K2O XRF 2.21 0.29 %
Na2O XRF 4.43 0.082 %
SiO2 XRF 56.09 4.6 %
TiO2 XRF 0.54 0.08 %
