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Cr 10.8% Ni 0.2% 3E 0.7g/t ultramafic Nkomati ZA

Category: BASE METALS 
Product Code: AMIS 0322

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DOWNLOAD AMIS CERTIFICATE (PDF)
AMIS0322 Cr 10.8% Ni 0.2% PGM 3E 0.7g/t Bushveld Nkomati South Africa

Origin of Material: The material for AMIS0322 was provided by the Nkomati Nickel Mine, joint venture between ARM Platinum and Norilsk Nickel Africa (Pty) Ltd. The mine is situated in the Machadodorp area, Mpumalanga, approximately 300 km east of Johannesburg in South Africa.

Mineral and Chemical Composition: Mineralisation at Nkomati occurs in a number of distinct zones within the Uitkomst Complex, a layered mafic-ultramafic intrusion exposed in a broad valley dissecting the Transvaal Sequence. Economic sulphide mineralization occurs  as disseminations, blebs and stringers in three zones, namely the Basal Mineralised  Zone (BMZ), in the Basal Gabbro; the  Main Mineralised Zone (MMZ), in the Lower Pyroxenite, and the Chromititic Peridotite Mineralised Zone (PCMZ), in the Chromititic Peridotite.   The Massive Sulphide Body (MSB), which was situated mainly in the granite basement below the Uitkomst Complex, has been mined out.


Recommended Concentrations and Limits
(at two Standard Deviations)

Certified Concentrations

Pt Pb Collection 0.22 ± 0.02 g/t
Pd Pb Collection 0.47 ± 0.04 g/t
Co P   103 ± 11 ppm
Cr XRF   10.78 ± 0.227 %
Cu M/ICP  600 ± 29 ppm
Cu P   584 ± 24 ppm
Ni M/ICP  2354 ± 237 ppm
Ni P   2149 ± 162 ppm
Specific Gravity 3.18 ± 0.22 

Provisional Concentrations

Au Pb Collection 0.042 ± 0.010 g/t
Co M/ICP  168 ± 34 ppm

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