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Au 4.49 g/t U 326.66ppm Wits South Africa

Category: GOLD MULTI-ELEMENT 
Product Code: AMIS 0539

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AMIS0539 Au 4.49 g/t U 326 ppm Wits South Africa

Origin of Material

This standard is made from uranium bearing gold ore originating from the Ventersdorp, Contact Reef, Carbon Leader Reef and Vaal Reef. The uranium bearing ore was blended with low grade material of similar matrix to obtain the required grade.

Approximate Mineral and Chemical Composition

Throughout the Witwatersrand, gold ores occur in sheets or reefs originally deposited horizontally under water. The thickness of the reefs range between a lie of grit to several meters, with an average of 300mm. The sediments were also intersected by dykes and sills of dolomite, diabase and syenite intruding existing faults. The reefs can be in the form of either course conglomerates, rock pebbles and cemented in a silicate matrix. Pebbles usually derived from vein quarts, may also consist of quarzitic, chert jasper and quartz porphyry. The matrix consists of pure silica, but also contains minute flakes of muscovite and pyrophyllite as well as visible pyrite and other sulphides. The gold is usually confined to the matrix and tends to be concentrated along bedding planes

Recommended Concentrations and Limits

Certified Concentrations

Analyte Method Certified (µ) Two Standard Deviation
Au Pb Collection1 4.49 0.26 g/t
SG SG3 2.74 0.060 Dimensionless
U XRF2 327 26 ppm
U3O8 XRF2 0.039 0.003 %
Ag 4A_MICP4 1 0.4 ppm
As 4A_MICP4 112 14 ppm
Ba 4A_MICP4 232 22 ppm
Be 4A_MICP4 0.806 0.14 ppm
Bi 4A_MICP4 0.952 0.090 ppm
Ca 4A_MICP4 1237 131 ppm
Co 4A_MICP4 34 4 ppm
Cr 4A_MICP4 358 58 ppm
Cs 4A_MICP4 2 0.1 ppm
Cu 4A_MICP4 40 2 ppm
Fe 4A_MICP4 1.33 0.12 %
Ga 4A_MICP4 9 0.6 ppm
Hf 4A_MICP4 3 0.8 ppm
K 4A_MICP4 1.14 0.040 %
La 4A_MICP4 32 2 ppm
Li 4A_MICP4 5 0.3 ppm
Mg 4A_MICP4 2809 320 ppm
Mn 4A_MICP4 118 17 ppm
Mo 4A_MICP4 3 1 ppm
Na 4A_MICP4 904 140 ppm
Nb 4A_MICP4 4 2 ppm
Ni 4A_MICP4 111 6 ppm
P 4A_MICP4 99 5 ppm
Pb 4A_MICP4 165 40 ppm
Rb 4A_MICP4 47 2 ppm
S 4A_MICP4 0.703 0.10 %
Sb 4A_MICP4 2 0.7 ppm
Sc 4A_MICP4 4 2 ppm
Sn 4A_MICP4 1 0.2 ppm
Sr 4A_MICP4 28 3 ppm
Th 4A_MICP4 38 4 ppm
Tl 4A_MICP4 0.4 0.2 ppm
U 4A_MICP4 326 29 ppm
V 4A_MICP4 27 3 ppm
W 4A_MICP4 1 0.4 ppm
Y 4A_MICP4 16 5 ppm
Zn 4A_MICP4 43 6 ppm

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