01/08/1989· The carbonate rocks of the Otavi in the northeastern part of South West Africa/Namibia are known to contain Pb, Zn and Cu sulphide deposits with the mining activities at Tsumeb, Kombat and Berg Aukas being the most prominent.
The Prieska orebody is a 50 million ton massive sulfide Zn Cu deposit situated near the eastern border of the middle Proterozoic Namaqua province of southern Africa.The strata bound, stratiform deposit lies in a terrane which has been affected by high grade metamorphism and intense deformation.
Fractionation results revealed that As , Bi , Cr , Cu , Mo , Ni , Pb , Sb , Se (47.377.9 ...
This rock is leuco cratic, medium to coarse grained, poorly foliated, rich in plagioclase, and contains 20 to 30 percent quartz. In this suite the color
including the reserve of 38 Mt @ 0.45% Cu, 6.4% Pb, 2.9% Zn, 82 g/t Ag. Reserves in 2000 were 8.7 Mt @ 0.5% Cu, 5.5% Pb, 2.9% Zn, 78 g/t Ag. Remaining Ore Reserve and Mineral Resources at the end of 2018 in the Deeps area were: Proved + Probable Reserve 5.59 Mt @ 2.98% Zn, 2.24% Pb;
A stratabound and stratiform lead zinc sulfide deposit, confined to the rocks of the upper volcanoclastic portion of the Precambrian Kapok Formation, was discovered in 1963 in the south of South West Africa.The ore horizon consists of a well bedded sedimentary sequence comprising presumably biologically and chemically precipitated sediments, namely microquartzite (a
15/06/2018· Size by assay results of the ores are compared for value elements Cu, Pb and Zn in Fig. 1, Fig. 2, Fig. 3, showing a bimodal distribution of valuables for both ores.The low Cu ore contained the highest proportion of the valuable minerals in the 38 µm fraction; in general, the results showed no preferential elemental deportment according to size.
gold mining area in the Gauteng Province of South Africa. In this study, 29 samples of water were collected around a gold mining area and were analyzed for Arsenic , Lead , Mercury , Cadmium , Chromium , Copper , Zinc , Cobalt and Nickel using Inductively Coupled Plasma Mass Spectrometry .
27/01/2021· The levels of Zn, Cu, and As remained comparable with the concentrations of Zn ranging from 120 to 305 mg kg 1, Cu from 131 to 283 mg kg 1, and As from 119 to 343 mg kg 1. Nevertheless, two exceptionally high values of ca. 730 mg kg 1 were recorded for As for both layers of the soil sample located farthest from the point of contamination.