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Au 0.592 g/t Greenstone South Africa

Category: GOLD 
Product Code: AMIS 0571

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AMIS0571 Au 0.592 g/t Greenstone South Africa

Origin of Material

Greenstone belts are zones of variably metamorphosed mafic to ultramafic volcanic sequences with associate sedimentary rocks that occur within Archaean and Proterozoic cratons between granite and gneiss bodies. Greenstone belts are primarily formed of volcanic rocks, dominated by basalt, with minor sedimentary rocks inter-leaving the volcanic formations. The material comes from the Greenstone belt in Barberton.

Approximate Mineral and Chemical Composition

The mineral assemblages of the samples are rich in greenschists and associated minerals. Greenschists is a generic name of minerals formed by regional metamorphism of mafic igneous rocks under the relatively low temperatures and pressures. The name greenstone originates from commonly having an abundance of green minerals such as chlorite/chamosite, Actinolite/ and amphiboles and sheets-like minerals such as biotite/muscovite. The common minerals associated with greenschists include quartz, orthoclase and calcite. The greenschists minerals are generally the pathfinders/ indicative of base metal sulphides and gold mineralisation.

Recommended Concentrations and Limits
(at two Standard Deviations)
Certified Concentrations

Analyte Method 6(µ) 9 ± (2s) Unit
Au Pb Collection 1 0.592 0.012 g/t
Cu 4A_MICP 2 459 14 ppm
C Combustion/LECO 3 5729 130 ppm
S Combustion/LECO 0.36 0.03 %
SG SG 4 3 0.1 Dimensionless
Al 4A_MICP 5.28 0.41 %
As 4A_MICP 318 39 ppm
Ba 4A_MICP 94 4 ppm
Be 4A_MICP 1 0.2 ppm
Bi 4A_MICP 0.5 0.1 ppm
Ca 4A_MICP 4.74 0.27 %
Cd 4A_MICP 0.2 0.061 ppm
Ce 4A_MICP 18 1 ppm
Co 4A_MICP 23 1 ppm
Cs 4A_MICP 14 0.6 ppm
Dy 4A_MICP 4 0.7 ppm
Er 4A_MICP 2 0.4 ppm
Eu 4A_MICP 1 0.4 ppm
Fe 4A_MICP 6.65 0.19 %
Ga 4A_MICP 13 0.8 ppm
Hf 4A_MICP 1 0.1 ppm
Ho 4A_MICP 0.8 0.7 ppm
In 4A_MICP 0.1 0.001 ppm
K 4A_MICP 1.11 0.070 %
La 4A_MICP 8 0.9 ppm
Li 4A_MICP 81 4 ppm
Lu 4A_MICP 0.3 0.1 ppm
Mg 4A_MICP 5.18 0.34 %
Mn 4A_MICP 1440 36 ppm
Mo 4A_MICP 1 0.1 ppm
Na 4A_MICP 1.57 0.11 %
Nb 4A_MICP 5 0.2 ppm
Nd 4A_MICP 11 8 ppm
Ni 4A_MICP 175 15 ppm
P 4A_MICP 455 13 ppm
Pb 4A_MICP 191 19 ppm
Pr 4A_MICP 3 2 ppm
Rb 4A_MICP 51 1 ppm
S 4A_MICP 0.38 0.004 %
Sb 4A_MICP 6 0.2 ppm
Sc 4A_MICP 23 1 ppm
Sm 4A_MICP 3 2 ppm
Sn 4A_MICP 3 0.6 ppm
Sr 4A_MICP 99 2 ppm
Ta 4A_MICP 0.7 0.2 Ppm
Tb 4A_MICP 0.6 0.1 ppm
Th 4A_MICP 2 0.1 ppm
Ti 4A_MICP 4582 281 ppm
Tl 4A_MICP 0.3 0.05 ppm
Tm 4A_MICP 0.3 0.05 ppm
U 4A_MICP 0.6 0.02 ppm
V 4A_MICP 192 14 ppm
W 4A_MICP 86 7 ppm
Y 4A_MICP 20 1 Ppm
Yb 4A_MICP 2 0.3 ppm
Zn 4A_MICP 87 12 ppm
Zr 4A_MICP 49 4 ppm

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