Description
DOWNLOAD AMIS CERTIFICATE (PDF)
Origin of Material
The standard is made from floatation process samples from the Maseve Plant at Royal Bafokeng Platinum Mine in the Western Limb of the Bushveld Complex. The samples are a combination of UG2 and Merensky Reefs with a 10:90 split respectively.
Approximate Mineral and Chemical Composition
The samples are a combination of UG2 and Merensky Reefs with a 10:90 split respectively. The Merensky Reef comprises of feldspathic pyroxenite, pyroxenite and anorthosite. Mineralization in this reef comprises of 2-5% disseminated or net textured magmatic sulphides, predominantly pyrrhotite, pentlandite, chalcopyrite and pyrite. The PGEs occur as micron-sized satellite grains around but rarely within the sulphides. The UG2 chromite ore consists of fine to medium size cumulus chromite grains with substantial amounts of post-cumulus orthopyroxene crystals.
Recommended Concentrations and Limits
Certified Concentrations (at two Standard Deviations)
Au NiS 0.145 0.019 g/t
Au Pb Collection 0.153 0.044 g/t
Ir NiS 0.056 0.009 g/t
Pd NiS 0.729 0.080 g/t
Pd Pb Collection 0.715 0.10 g/t
Pt NiS 1.69 0.18 g/t
Pt Pb Collection 1.66 0.22 g/t
Rh NiS 0.153 0.022 g/t
Rh Pb Collection 0.135 0.025 g/t
Ru NiS 0.272 0.023 g/t
Co 4A_MICP 71 8 ppm
Co FUS 71 4 ppm
Cr FUS 5718 100 ppm
Cu 4A_MICP 357 37 ppm
Cu FUS 360 25 ppm
Fe 4A_MICP 6.28 0.27 %
Fe FUS 6.08 0.19 %
Ni 4A_MICP 911 73 ppm
Ni FUS 918 48 ppm
C Combustion/LECO 1126 98 ppm
S Combustion/LECO 0.19 0.01 %
S 4A_MICP 0.20 0.005 %
SG SG 3.07 0.17 Dimensionless
Al 4A_MICP 8.25 0.43 %
Ba 4A_MICP 77 9 ppm
Be 4A_MICP 1 0.1 ppm
Ca 4A_MICP 6.23 0.28 %
K 4A_MICP 1637 165 ppm
Mg 4A_MICP 8.43 0.40 %
Mn 4A_MICP 2096 167 ppm
P 4A_MICP 126 6 ppm
Sr 4A_MICP 219 15 ppm
Ti 4A_MICP 1362 112 ppm
V 4A_MICP 124 18 ppm
Y 4A_MICP 4 0.1 ppm
Zn 4A_MICP 71 11 ppm
Zr 4A_MICP 21 5 ppm
Calculated 4E (Pb Collection) = Gold + Palladium + Platinum + Rhodium= 2.663 g/t
Calculated 6E (NiS) = Gold + Iridium + Palladium + Platinum + Rhodium + Ruthenium = 3.045 g/t
Major Oxides
Certified Concentrations (at two Standard Deviations)
Cr2O3 FUS 0.84 0.1 %
Cr2O3 XRF 0.83 0.04 %
Al2O3 XRF 15.31 0.47 %
CaO XRF 8.67 0.10 %
Fe2O3 XRF 8.99 0.067 %
K2O XRF 0.19 0.01 %
MgO XRF 14.00 0.19 %
Na2O XRF 1.15 0.15 %
SiO2 XRF 49.24 0.44 %