Description
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AMIS0519 Au 1.61g/t Greenstone South Africa
Origin of Material
The material for AMIS0519 was provided by Vantage Goldfields from Lily Mine operated by MIMCO, a subsidiary of Vantage Goldfields. Lily Mine is located 27 kilometers north east of the town of Barberton in Mpumalanga Province, South Africa. The mine is situated in the Archaean Barberton Greenstone Belt. Gold is contained in mesothermal veins associated with late tectonic shears and fractures within rocks of the Barberton Supergroup, which comprises an assortment of ultramafic and mafic submarine volcanic, turbiditic greywacke sandstones and shales. Intense shearing, massive quartz veining, silicification of BIF and sulphide enrichment characterize the larger ore bodies
Approximate Mineral and Chemical Composition
The 2m to 15m wide ore body at Lily is contained within a prominent shear zone, situated along and structurally controlled by the Lily Fault, which defines a major structural break along the northern flank of the Archaean Barberton Greenstone Belt. The shear zone is bounded by talc schist in the footwall, greywacke and banded ironstone (BIF), chert and amphibolite in the hanging wall. The primary sulphide is pyrhotite, with minor arsenopyrite, magnetite, pyrite and rare chalcopyrite. Gold occurs associated with quartz and with the pyrhotite and arsenopyrite.
Analyte Method 8(µ) 11 ± (2s) Unit
Au 1Pb Collection 1.61 0.1 g/t
C 2Combustion/LECO 8353 594 ppm
S Combustion/LECO 2.88 0.22 %
SG 3SG 3.07 0.15 Dimensionless
Ag 44A_MICP 0.5 0.1 ppm
Al 4A_MICP 3.63 0.22 %
Al 5FUS 3.50 0.084 %
As 4A_MICP 791 149 ppm
Ba 4A_MICP 304 24 ppm
Ba FUS 291 13 ppm
Be 4A_MICP 2 0.2 ppm
Bi 4A_MICP 0.2 0.04 ppm
Ca 4A_MICP 1.39 0.10 %
Cd 4A_MICP 0.7 0.1 ppm
Ce 4A_MICP 21 1 ppm
Ce FUS 21 1 ppm
Co 4A_MICP 25 3 ppm
Cr 4A_MICP 364 30 ppm
Cr FUS 385 41 ppm
Cs 4A_MICP 1 0.09 ppm
Cs FUS 0.9 0.2 ppm
Cu 4A_MICP 77 2 ppm
Fe 4A_MICP 19.95 1.6 %
Fe FUS 19.59 0.64 %
Ga 4A_MICP 10 3 ppm
Hf 4A_MICP 1 0.1 ppm
Ho FUS 0.5 0.08 ppm
In 4A_MICP 0.1 0.01 ppm
K 4A_MICP 1.36 0.069 %
La 4A_MICP 11 1 ppm
La FUS 10 2 ppm
Li 4A_MICP 16 2 ppm
Mg 4A_MICP 3.12 0.10 %
Mg FUS 3.03 0.12 %
Mn 4A_MICP 4517 280 ppm
Mo 4A_MICP 1 0.2 ppm
Na 4A_MICP 5855 278 ppm
Nb 4A_MICP 4 0.3 ppm
Ni 4A_MICP 195 19 ppm
P 4A_MICP 410 26 ppm
Pb 4A_MICP 32 3 ppm
Rb 4A_MICP 53 4 ppm
Rb FUS 48 7 ppm
Sb 4A_MICP 15 2 ppm
Sc 4A_MICP 6 0.6 ppm
Si FUS 24.15 2.3 %
Sn 4A_MICP 1 0.2 ppm
Sr 4A_MICP 31 2 ppm
Sr FUS 31 5 ppm
Ta 4A_MICP 0.7 0.1 ppm
Tb FUS 0.4 0.05 ppm
Te 4A_MICP 0.2 0.09 ppm
Th 4A_MICP 3 0.2 ppm
Th FUS 3 0.5 ppm
Ti 4A_MICP 1163 109 ppm
Ti FUS 1213 72 ppm
Tl 4A_MICP 0.8 0.1 ppm
U 4A_MICP 2 0.2 ppm
V 4A_MICP 47 11 ppm
W 4A_MICP 8 1 ppm
Y 4A_MICP 13 0.7 ppm
Y FUS 16 2 ppm
Yb FUS 2 0.2 ppm
Zn 4A_MICP 195 19 ppm
Zr 4A_MICP 46 3 ppm
