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 3.55 0.25 g/t
Au CL 3.48 0.36 g/t
Cu 4A_MICP 40 7 ppm
C Combustion/LECO 1.25 0.020 %
LOI LOI 5.90 0.39 %
SG SG 2.77 0.16 Dimensionless
Al 4A_MICP 6.78 0.50 %
Al XRF 7.01 0.55 %
As 4A_MICP 27 5 ppm
Ba 4A_MICP 691 32 ppm
Be 4A_MICP 1 0.04 ppm
Ca 4A_MICP 2.76 0.050 %
Ca XRF 2.82 0.22 %
Ce 4A_MICP 65 1 ppm
Co 4A_MICP 12 3 ppm
Fe 4A_MICP 2.50 0.089 %
Fe XRF 2.58 0.064 %
K 4A_MICP 1.72 0.15 %
K XRF 1.83 0.11 %
Mg 4A_MICP 1.23 0.062 %
Mg XRF 1.31 0.095 %
Mn 4A_MICP 472 74 ppm
Mn XRF 460 19 ppm
Na 4A_MICP 3.18 0.19 %
Ni 4A_MICP 38 6 ppm
P 4A_MICP 691 47 ppm
P XRF 681 100 ppm
Si XRF 29.91 0.65 %
Sr 4A_MICP 673 31 ppm
Ti 4A_MICP 2015 347 ppm
Ti XRF 2234 179 ppm
V 4A_MICP 63 4 ppm
Zn 4A_MICP 47 3 ppm
Major Oxides Certified Concentrations (at two Standard Deviations)
Al2O3 XRF 13.23 1.0 %
CaO XRF 3.94 0.30 %
Fe2O3 XRF 3.69 0.092 %
K2O XRF 2.18 0.16 %
MgO XRF 2.17 0.16 %
MnO XRF 0.059 0.002 %
Na2O XRF 4.52 0.40 %
P2O5 XRF 0.16 0.02 %
SiO2 XRF 63.72 1.6 %
TiO2 XRF 0.37 0.03 %
