South Africa
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At one time I worked on a research project that studied the drill core from a deep stratigraphic borehole drilled into the layered mafic/ultramafic rocks of the northern Bushveld Complex. Drilling to a depth of 2945.5 m was carried out over a period of ten months, and completed in late 1991. The core recovered from the…
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Mention reef facies to most geologists and they might conjure up a mental image of a carbonate reef complex. But to geologists working in the Bushveld Complex, reef facies is a descriptive term used to account for the variation a single mineralized horizon exhibits within the layered ultramafic-mafic sequence. One such horizon is that of…
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What follows is a brief description of the early mining history of the Mesoproterozoic-age Steenkampskraal monazite ore body located in southern Namaqualand, about 340 km north of Cape Town in South Africa. Steenkampskraal is a massive-lode ore body, thought to have originated by igneous processes that led to a phosphate-sulphide-oxide ore type. The ore occurs as…