Description
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Origin of Material
This standard was made using Merensky Concentrate material supplied by Northam Platinum Ltd (Booysendal North) from the Eastern Limb of the Bushveld Complex.
Approximate Mineral and Chemical Composition
This material is predominantly or wholly derived from Merensky Reef which 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 pyrhotite, pentlandite, chalcopyrite and pyrite. The PGE’s occur as micron-sized satellite grains around but rarely within the sulphides. The concentrates produced here however has had most of the silicates removed.
Recommended Concentrations and Limits
(at two Standard Deviations)
Certified Concentrations
Au NiS 3.39 0.54 g/t
Au Pb Collection 3.59 0.41 g/t
Ir NiS 2.80 0.51 g/t
Pd NiS 29.86 2.5 g/t
Pd Pb Collection 29.11 2.4 g/t
Pt NiS 53.99 3.2 g/t
Pt Pb Collection 53.15 6.4 g/t
Rh NiS 6.50 1.1 g/t
Ru NiS 13.54 1.8 g/t
4E Pb Collection 95.45 6.4 g/t
Co 4A_MICP 530 109 ppm
Co 4FUS 549 107 ppm
Cu FUS 1.68 0.24 %
Fe 4A_MICP 12.97 0.49 %
Fe FUS 12.60 0.51 %
Ni FUS 2.48 0.14 %
C Combustion/LECO 8267 657 ppm
S Combustion/LECO 6.14 0.32 %
S FUS 6.16 0.33 %
SG SG 3.18 0.28 Dimensionless
Ag 4A_MICP 5 2 ppm
As 4A_MICP 112 5 ppm
Ba 4A_MICP 22 5 ppm
Ba FUS 23 5 ppm
Be 4A_MICP 0.2 0.04 ppm
Bi 4A_MICP 5 0.2 ppm
Bi FUS 4 2 ppm
Ca 4A_MICP 1.70 0.15 %
Cd 4A_MICP 0.7 0.2 ppm
Ce 4A_MICP 4 0.9 ppm
Cs FUS 0.5 0.30 ppm
Ga 4A_MICP 4 0.5 ppm
Hf 4A_MICP 0.3 0.07 ppm
In 4A_MICP 0.1 0.03 ppm
La 4A_MICP 1 0.2 ppm
Li 4A_MICP 8 2 ppm
Mg FUS 11.26 0.92 %
Mn 4A_MICP 1163 115 ppm
Mn FUS 1067 73 ppm
Mo 4A_MICP 3 0.9 ppm
Na 4A_MICP 1587 285 ppm
Nb 4A_MICP 0.98 0.2 ppm
Pb 4A_MICP 91 17 ppm
Rb 4A_MICP 4 0.5 ppm
Sb 4A_MICP 3 0.7 ppm
Sc 4A_MICP 16 0.9 ppm
Sc FUS 22 5 ppm
Sr FUS 34 12 ppm
Ta 4A_MICP 0.6 0.2 ppm
Te 4A_MICP 8 3 ppm
Th 4A_MICP 1 0.2 ppm
Th FUS 1 0.4 ppm
Ti 4A_MICP 983 210 ppm
U 4A_MICP 0.2 0.04 ppm
U FUS 0.2 0.1 ppm
V 4A_MICP 124 4 ppm
W 4A_MICP 0.5 0.1 ppm
Y 4A_MICP 3 0.1 ppm
Zn 4A_MICP 137 29 ppm
Zn FUS 135 13 ppm
Major Oxides
Certified Concentrations (at two Standard Deviations)
Cr2O3 FUS 1.17 0.10 %
CaO XRF 2.36 0.17 %
Cr2O3 XRF 1.21 0.10 %
K2O XRF 0.084 0.02 %
MgO FUS 19.30 0.47 %
MnO XRF 0.14 0.03 %
Calculated 6E (NiS): Gold + Iridium + Palladium + Platinum + Rhodium + Ruthenium= 110.08 g/t
