Description
DOWNLOAD AMIS CERTIFICATE (PDF)
Origin of Material
The material was supplied by Anglo Platinum from Mokgalakwena Mine. The lowermost Bushveld unit over much of the limb is the upper sections of the Critical Zone. A sulphide bearing composite pyroxenite layer of variable thickness occurring near the base of the main layered mafic mass is known as the Platreef and hosts the important PGE deposits with associated Cu & Ni at Mokopane where it rests on basement.
Approximate Mineral and Chemical Composition
Platreef is a Pt/Pd/Ni/Cu ore. Mineralization in this Platreef comprises 2-5% disseminated or net textured magmatic sulphides, mainly pyrrhotite, pentlandite and chalcopyrite. The PGE’s occur as
micron-sized satellite grains around but rarely within the sulphides
Recommended Concentrations and Limits (at two Standard Deviations)
Certified Concentrations
Analyte Method (µ) (2s) ± Unit
Au NiS 0.227 0.057 g/
Pb Collection 0.235 0.055 g/t
Ir NiS 0.055 0.017 g/t
Os NiS 0.025 0.0067 g/t
Pd NiS 2.33 0.25 g/t
Pd Pb Collection 2.42 0.29 g/t
Pt NiS 2.01 0.30 g/t
Pt Pb Collection 2.08 0.25 g/t
Rh NiS 0.219 0.028 g/t
Rh Pb Collection 0.189 0.031 g/t
Ru NiS 0.223 0.038 g/t
Co FUS 94 13 ppm
Co XRF 89 23 ppm
Cr FUS 7819 387 ppm
Cu FUS 957 163 ppm
Ni FUS 1952 167 ppm
S Combustion/LECO 0.52 0.04 %
C Combustion/LECO 1025 90 ppm
LOI LOI 2.89 0.12 %
SG SG 3.07 0.24 Dimensionless
Al FUS 6.02 0.12 %
Ba FUS 176 10 ppm
Ca FUS 4.59 0.35 %
Fe FUS 6.76 0.44 %
Ga FUS 15 2 ppm
K FUS 3971 224 ppm
Li FUS 40 12 ppm
Mg FUS 9.28 0.94 %
Mn FUS 1608 189 ppm
Rb FUS 19 2 ppm
Sb FUS 2 0.3 ppm
Sn FUS 1067 160 ppm
Sr FUS 249 20 ppm
Ta FUS 101 10 ppm
Th FUS 0.7 0.4 ppm
Ti FUS 1316 185 ppm
Y FUS 7 0.6 ppm
Zn FUS 108 28 ppm
Calculation 6E = Platinum (NiS) + Palladium (NiS) + Gold (NiS) + Iridium (NiS)+ Ruthenium (NiS) +
Rhodium (NiS) = 5.064 g/t
Calculation 4E = Platinum (Pb Collection) + Palladium (Pb Collection) + Gold (Pb Collection) +
Rhodium (Pb Collection) = 4.92 g/t
Major Oxides Certified Concentrations (at two Standard Deviations)
Analyte Method (µ) (2s) ± Unit
Al2O3 XRF 11.34 0.32 %
CaO XRF 6.38 0.044 %
Cr2O3 FUS 1.11 0.10 %
Cr2O3 XRF 1.07 0.021 %
Fe2O3 XRF 9.70 0.11 %
K2O XRF 0.39 0.01 %
MgO XRF 14.90 0.44 %
MnO XRF 0.21 0.01 %
Na2O XRF 1.93 0.021 %
P2O5 XRF 0.049 0.006 %
SO3 XRF 1.30 0.040 %
SiO2 XRF 50.20 0.42 %
TiO2 XRF 0.21 0.02 %
V2O5 XRF 0.020 0.001 %
