Description
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AMIS0344 U 226 ppm Uraniferous alaskite Rossing Namibia
Origin of Material: AMIS0344 was supplied by Rio Tinto Limited from their Rössing Uranium Mine situated 70km north-east of Swakopmund in Namibia. The uranium mineralisation is associated with Neoproterozoic Damara Orogen syntactic alaskitic granites that display concordant, discordant and replacement relationships to the heavily folded host gniesses, marbles and limestones of the Khan and Rössing Formations.
Mineral and Chemical Composition: The uranium bearing minerals are mainly uraninite and its alteration products, and minor betafite
Recommended Concentrations and Limits
(at two Standard Deviations)
Certified Concentrations
U M/ICP 221 ± 26 ppm
U XRF 226 ± 19 ppm
Ca M/ICP 2.070 ± 0.179 %
Ca XRF 2.090 ± 0.052 %
Nb M/ICP 22.4 ± 2.4 ppm
Specific Gravity 2.68 ± 0.08
Provisional Concentration
Ta M/ICP 2.0 ± 0.4 ppm
