Description
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Origin of Material
The material for this standard comes from the Yaramoko Gold Mine, located 200km southwest of Ouagadougou, Burkina Faso. The deposit occurs within the Paleoproterozoic Birimian greenstone belt.
Approximate Mineral and Chemical Composition
Mineralisation is synchronous with regional metamorphism and deformation. The gold found here is typical late orogenic hydrothermal deposit. Gold mineralisation is associated with a network of quartz veins containing subordinate amounts of carbonate, tourmaline, sulphides and native gold.
Recommended Concentrations and Limits
Certified Concentrations (at two Standard Deviations)
Au Pb Collection 2.46 0.31 g/t
Au FA_GRAV 2.48 0.39 g/t
Au CL 2.30 0.30 g/t
Cu 4A_MICP 141 7 ppm
Cu 2A_MICP 132 17 ppm
C Combustion/LECO 1.10 0.046 %
S Combustion/LECO 0.44 0.06 %
S 4A_MICP 0.48 0.07 %
S 2A_MICP 0.44 0.07 %
SG 7 SG 2.71 0.10 Dimensionless
Ag 2A_MICP 0.4 0.1 ppm
Al 2A_MICP 1.84 0.15 %
Al 4A_MICP 5.66 0.57 %
As 2A_MICP 6 0.5 ppm
Ba 4A_MICP 293 29 ppm
Be 4A_MICP 1 0.1 ppm
Ca 2A_MICP 2.55 0.24 %
Ca 4A_MICP 2.80 0.38 %
Cd 2A_MICP 0.07 0.01 ppm
Ce 4A_MICP 29 3 ppm
Co 2A_MICP 21 1 ppm
Co 4A_MICP 23 5 ppm
Cr 4A_MICP 186 32 ppm
Fe 2A_MICP 4.44 0.18 %
Fe 4A_MICP 5.08 0.23 %
Ga 2A_MICP 9 4 ppm
K 4A_MICP 1.41 0.10 %
La 4A_MICP 15 1 ppm
Li 4A_MICP 29 3 ppm
Mg 2A_MICP 1.48 0.19 %
Mg 4A_MICP 1.78 0.21 %
Mn 2A_MICP 697 86 ppm
Mn 4A_MICP 810 36 ppm
Mo 2A_MICP 2 0.1 ppm
Mo 4A_MICP 2 1 ppm
Na 2A_MICP 925 97 ppm
Na 4A_MICP 1.88 0.20 %
Nb 4A_MICP 6 0.3 ppm
Ni 2A_MICP 133 16 ppm
Ni 4A_MICP 137 13 ppm
P 2A_MICP 372 46 ppm
P 4A_MICP 410 34 ppm
Pb 2A_MICP 5 0.4 ppm
Rb 4A_MICP 42 2 ppm
Sb 4A_MICP 0.6 0.08 ppm
Sc 2A_MICP 9 1 ppm
Sc 4A_MICP 16 0.8 ppm
Sn 2A_MICP 0.6 0.09 ppm
Sn 4A_MICP 2 0.2 ppm
Sr 2A_MICP 42 5 ppm
Sr 4A_MICP 100 7 ppm
Te 4A_MICP 0.3 0.07 ppm
Tl 4A_MICP 0.2 0.01 ppm
V 4A_MICP 150 12 ppm
W 2A_MICP 95 14 ppm
W 4A_MICP 137 21 ppm
Y 4A_MICP 14 3 ppm
Zn 4A_MICP 77 13 ppm
Zr 2A_MICP 3 0.8 ppm
Zr 4A_MICP 67 17 ppm
Major Oxides
Certified Concentrations (at two Standard Deviations)
Al2O3 XRF 11.22 0.21 %
Cr2O3 XRF 0.030 0.006 %
Fe2O3 XRF 7.33 0.18 %
K2O XRF 1.69 0.068 %
MgO XRF 3.00 0.049 %
MnO XRF 0.11 0.01 %
Na2O XRF 2.49 0.14 %
P2O5 XRF 0.089 0.02 %
SiO2 XRF 63.32 1.8 %
TiO2 XRF 0.71 0.02 %
