Description
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Origin of Material
This standard was made using UG2 Concentrate material supplied by Northam Platinum Ltd (Booysendal North) from the Eastern Limb of the Bushveld Complex.
Approximate Mineral and Chemical Composition
The UG2 chromite ore consists of fine to medium size cumulus chromite grains with substantial amounts of post-cumulus orthopyroxene crystals. The footwall is a coarse grained pegmatoidal pyroxenite with sporadic occurrences of chromite blebs, lenses, and stringers. The hanging wall is predominantly fine to medium grained orthopyroxenite with three or more chromite stringers referred to as the UG2 leaders. The concentrates produced have had most of the chromite and some of the silicates removed.
Recommended Concentrations and Limits (at two Standard Deviations)
Certified Concentrations
Analyte Method (µ) (2s) ± Unit
Au NiS 4.06 0.41 g/t
Au Pb Collection 4.26 0.51 g/t
Ir NiS 6.59 0.54 g/t
Pd NiS 46.19 2.6 g/t
Pd Pb Collection 44.94 4.5 g/t
Pt NiS 88.54 4.0 g/t
Pt Pb Collection 86.94 9.2 g/t
Rh NiS 15.95 1.8 g/t
Ru NiS 28.85 2.5 g/t
4E FA_GRAV 161.39 21 g/t
Co FUS 249 53 ppm
Cu FUS 3892 346 ppm
Cu 4A_MICP 3982 390 ppm
Fe FUS 8.53 0.73 %
Fe 4A_MICP 8.93 0.48 %
Ni FUS 7689 1060 ppm
C Combustion/LECO 1.09 0.13 %
S Combustion/LECO 1.88 0.073 %
S 4A_MICP 1.97 0.027 %
SG SG 3.00 0.34 Dimensionless
Ag 4A_MICP 1 0.6 ppm
Al 4A_MICP 2.57 0.28 %
As FUS 457 52 ppm
Ba FUS 37 5 ppm
Be 4A_MICP 0.2 0.06 ppm
Bi 4A_MICP 1 0.2 ppm
Bi FUS 1 0.2 ppm
Ca 4A_MICP 2.09 0.13 %
Cd 4A_MICP 0.3 0.1 ppm
Ce 4A_MICP 5 0.4 ppm
Cr FUS 1.87 0.19 %
Cs FUS 0.8 0.3 ppm
Ga 4A_MICP 5 2 ppm
Ga FUS 7 1 ppm
Hf 4A_MICP 0.5 0.1 ppm
In 4A_MICP 0.07 0.03 ppm
La 4A_MICP 2 0.2 ppm
Li FUS 16 2 ppm
Mg 4A_MICP 12.60 1.3 %
Mg FUS 12.60 1.1 %
Mn 4A_MICP 1178 39 ppm
Mn FUS 1132 113 ppm
Mo 4A_MICP 2 0.7 ppm
Na 4A_MICP 2295 169 ppm
Nb 4A_MICP 1 0.2 ppm
P 4A_MICP 75 4 ppm
Pb 4A_MICP 125 24 ppm
Pb FUS 136 15 ppm
Rb 4A_MICP 5 1 ppm
Rb FUS 7 1 ppm
Sb FUS 8 1 ppm
Sc 4A_MICP 20 7 ppm
Sc FUS 27 2 ppm
Se 4A_MICP 4 1 ppm
Sn FUS 43 7 ppm
Sr FUS 46 15 ppm
Ta 4A_MICP 0.5 0.2 ppm
Th 4A_MICP 2 0.4 ppm
Th FUS 2 0.4 ppm
Ti 4A_MICP 1340 259 ppm
Ti FUS 1880 245 ppm
Tl 4A_MICP 0.3 0.1 ppm
U 4A_MICP 0.3 0.09 ppm
U FUS 0.4 0.2 ppm
V 4A_MICP 204 38 ppm
V FUS 207 18 ppm
W 4A_MICP 0.8 0.2 ppm
Y 4A_MICP 3 0.9 ppm
Y FUS 5 0.8 ppm
Calculated 6E (NiS) = Gold + Iridium + Palladium + Platinum + Rhodium + Ruthenium= 190.19 g/t
Major Oxides
Certified Concentrations (at two Standard Deviations)
Cr2O3 FUS 2.84 0.12 %
Cr2O3 XRF 2.89 0.33 %
CaO XRF 3.02 0.083 %
Fe2O3 XRF 12.65 0.63 %
K2O XRF 0.13 0.009 %
MgO XRF 21.29 1.2 %
MnO XRF 0.15 0.02 %
Na2O XRF 0.32 0.02 %
SiO2 XRF 46.09 2.8 %
TiO2 XRF 0.31 0.03 %
