The composition of descloizite-mottramite in relation to the trace-element distribution of Pb, Zn, Cu and V in the Otavi Mountain Land, South West Africa/Namibia von van der Westhuizen, W.A., Tordiffe, E.A.W., de Bruiyn, H., Beukes, G.J.

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The Jacomynspan copper-nickel prospect — a study of secondary dispersion in the calcretes of the Northern Cape Province, South Africa von Tordiffe, E.A.W., Vermaak, J.J., Van der Westhuizen, W.A., Beukes, G.J.

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Raindrop imprints in the Late Archaean-Early Proterozoic Ventersdorp Supergroup, South Africa von van der Westhuizen, W.A., Grobler, N.J., Loock, J.C., Tordiffe, E.A.W.

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