Description
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AMIS0256 Platinum, Merensky, 4E 7.98 g/t, Western Limb, South Africa
Origin of Material: AMIS0256 was made from material supplied by Anglo Platinum, using Merensky Reef underground sample material from the Western Limb of the Bushveld complex.
Mineral and Chemical Composition: The Merensky Reef comprises components of feldspathic pyroxenite, pyroxenite and anorthosite. Peak PGE values are associated with a thin chromitite stringer. Mineralization in this Merensky Reef comprises 2-5% disseminated or net textured magmatic sulphides, predominantly pyrrhotite, pentlandite, chalcopyrite and pyrite. The PGE’s occur as micron-sized satellite grains around but rarely within the sulphides.
Major element chemistry data from13 of the labs has been compiled and certified. Uncertified summary statistics for trace element data are set out in the appendix.
Recommended Concentrations and Limits
(at two Standard Deviations)
Certified Concentrations
Pt Pb Collection 4.86 ± 0.22 g/t
Pd Pb Collection 2.50 ± 0.12 g/t
Au Pb Collection 0.34 ± 0.04 g/t
Pt NIS 4.81 ± 0.32 g/t
Pd NIS 2.45 ± 0.20 g/t
Au NIS 0.33 ± 0.04 g/t
Cu M/ICP 1252 ± 69 ppm
Cu P 1266 ± 61 ppm
Ni M/ICP 2913 ± 182 ppm
Ni P 2381 ± 229 ppm
Specific Gravity 3.16 ± 0.16
Provisional Concentrations
Ir NiS 0.13 ± 0.02 g/t
Rh 0.39 ± 0.05 g/t
Ru NiS 0.70 ± 0.09 g/t
Co M/ICP 125 ± 18 ppm
Co P 65 ± 9 ppm
4E (Pt, Pd, Au (all NiS) & Rh) = 7.98 g/t
