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Au 1.71 g/t Greenstone South Africa

Category: GOLD 
Product Code: AMIS 0560

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AMIS0560 Au 1.71 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.

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

Au Pb Collection1 1.71 0.14 g/t
C Combustion/LECO2 19573 1006 ppm
S 4A_MICP3 0.566 0.035 %
S Combustion/LECO 0.572 0.061 %
LOI LOI4 8.53 0.73 %
SG SG5 2.83 0.11 Dimensionless
Ag 4A_MICP 0.6 0.2 ppm
As 4A_MICP 458 78 ppm
Ba 4A_MICP 289 29 ppm
Be 4A_MICP 1 0.3 ppm
Bi 4A_MICP 1 0.1 ppm
Cd 4A_MICP 0.1 0.02 ppm
Ce 4A_MICP 39 9 ppm
Co 4A_MICP 37 3 ppm
Co FUS6 38 5 ppm
Cr FUS 772 54 ppm
Cs 4A_MICP 7 1 ppm
Cu 4A_MICP 119 7 ppm
Cu FUS 114 30 ppm
Dy 4A_MICP 2 0.3 ppm
Er 4A_MICP 1 0.2 ppm
Eu 4A_MICP 1 0.2 ppm
Fe 4A_MICP 56828 4382 ppm
Ga 4A_MICP 13 3 ppm
Gd 4A_MICP 3 1 ppm
Hf 4A_MICP 2 0.5 ppm
Ho 4A_MICP 0.4 0.04 ppm
In 4A_MICP 0.04 0.02 ppm
K FUS 20753 1639 ppm
La 4A_MICP 19 2 ppm
Li 4A_MICP 26 3 ppm
Lu 4A_MICP 0.2 0.03 ppm
Mg 4A_MICP 29544 2455 ppm
Mn 4A_MICP 1155 157 ppm
Mo 4A_MICP 2 0.3 ppm
Na 4A_MICP 7968 739 ppm
Nd 4A_MICP 17 1 ppm
Ni 4A_MICP 305 12 ppm
P 4A_MICP 387 40 ppm
Pb 4A_MICP 12 3 ppm
Pr 4A_MICP 4 0.4 ppm
Rb 4A_MICP 95 27 ppm
Sb 4A_MICP 8 1 ppm
Sc 4A_MICP 16 1 ppm
Sm 4A_MICP 3 0.3 ppm
Sn 4A_MICP 2 1 ppm
Sr 4A_MICP 110 9 ppm
Tb 4A_MICP 0.3 0.1 ppm
Te 4A_MICP 0.1 0.04 ppm
Th 4A_MICP 6 2 ppm
Tl 4A_MICP 0.5 0.2 ppm
Tm 4A_MICP 0.2 0.01 ppm
U 4A_MICP 4 1 ppm
V 4A_MICP 110 8 ppm
Y 4A_MICP 8 3 ppm
Yb 4A_MICP 1 0.4 ppm
Zn 4A_MICP 90 14 ppm
Zr 4A_MICP 81 7 ppm

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