Description
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Origin of Material
This standard was made using a predominantly sulphide ore sourced from the Kansanshi Mine, located in the North Western Province of Zambia. The Kansanshi deposit occurs within the Lufilian arc, a major tectonic province characterized by broadly north directed fold and thrust structures, which hosts the world class Central African Copperbelt. The deposit at Kansanshi occurs within a broad, northwest trending, north-west closing antiform, which can be traced for approximately 12 kilometers. Kansanshi is a vein deposit developed within a tectonised rock sequence and, as such, constitutes a major mineralization control. The main 3 veins and vein swarms dip sub vertically, perpendicular to the fold axes, in the plane of maximum extension.
Approximate Mineral and Chemical Composition
Deep tropical weathering has resulted in supergene enrichment and subsequent partial oxidation of the deposit. Primary copper sulphide mineralization is dominated by chalcopyrite, with very minor bornite, accompanied by relatively minor pyrite and pyrrhotite. Oxide mineralization is dominated by chrysocolla with malachite, limonite and cupriferous goethite. The mixed zone includes both oxide and primary mineralization but also carries significant chalcocite, minor native copper and tenorite. Some copper appears to be carried in clay and mica minerals, where it is essentially refractory.
Recommended Concentrations and Limits
Certified Concentrations (at two Standard Deviations)
Cu 2A_MICP 6716 364 ppm
Cu 4A_MICP 6944 608 ppm
Co 2A_MICP 50 7 ppm
Co 4A_MICP 53 2 ppm
Au Pb Collection 0.035 0.022 g/t
C Combustion/LECO 3.17 0.14 %
S Combustion/LECO 1.41 0.11 %
S 4A_MICP 1.40 0.11 %
Al 4A_MICP 5.87 0.17 %
Ba 4A_MICP 238 4 ppm
Ca 4A_MICP 7.25 0.52 %
Fe 2A_MICP 3.36 0.051 %
K 4A_MICP 1.49 0.033 %
Mg 2A_MICP 9987 1531 ppm
Mg 4A_MICP 1.15 0.074 %
Mn 4A_MICP 489 28 ppm
Mo 4A_MICP 14 1 ppm
Na 4A_MICP 2.09 0.052 %
Ni 2A_MICP 73 3 ppm
Ni 4A_MICP 82 12 ppm
P 4A_MICP 560 58 ppm
Sr 4A_MICP 307 27 ppm
Ti 4A_MICP 3317 279 ppm
V 4A_MICP 127 6 ppm
Zn 2A_MICP 10 4 ppm
Zn 4A_MICP 14 4 ppm
Major Oxides
Certified Concentrations (at two Standard Deviations)
Al2O3 XRF 11.47 0.090 %
CaO XRF 10.57 0.27 %
Fe2O3 XRF 5.74 0.70 %
K2O XRF 1.83 0.068 %
MgO XRF 1.97 0.082 %
Na2O XRF 2.80 0.11 %
P2O5 XRF 0.13 0.006 %
SiO2 XRF 51.78 0.30 %
TiO2 XRF 0.90 0.03 %
