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Location: 60 km S from Port Nolloth, South Africa
19 Chain Avenue Montague GardensCape TownSouth Africa7441
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Mining scale, mining and mill throughput capaciites.Full profiles of select mines and projects.
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Equipment type, model, size and quantity.Full profiles of select mines and projects.
Camp size, mine location and contacts.Full profiles of select mines and projects.
In 2019. Trans Hex has been forced to liquidate its failing West Coast Resources (WCR) subsidiary.
A host of diamond placers of variable age have been deposited on the Namaqualand coastal plain. The source of the diamond populations in these placers were primary diamondiferous kimberlite pipes located on the South African Kaapvaal Craton. Extensive erosion of these kimberlites released the diamonds into fluvial systems that transported them vast distances to the Atlantic coast. A portion of the diamonds were deposited in fluvial deposits of different ages on the coastal plain, however the majority were carried into the marine environment and deposited and reconcentrated in beach terraces. The abrasive fluvial and marine transport mechanisms have, effectively, removed a high percentage of the poorer quality diamonds from the secondary placer deposits, thus providing a diamond population that is 95% gem quality. The active nature of the tectonic framework of the Namaqualand region during the Cretaceous and Tertiary resulted in a complex structural setting that played a major role in the continuously evolving rift-flank drainage pattern adjacent to this area. As a result, the diamond placers on the Namaqualand coastal plain are complex due to continuous reworking of deposited diamondiferous fluvial sediments which resulted in a highly variable suite of placer deposits in terms of mineralisation style and diamond grade (stone density and stone size).Most of the earliest placer and associated sedimentary deposits have been reworked completely, thus making it difficult to trace a complete stratigraphic history for the diamond placers. However, DBCM has undertaken extensive exploration work on the coastal plain and has identified a substantial range of ages of the deposits from the older Koingnaas fluvial channels (Cretaceous) in the south to the Megalodon type channels (Oligocene) and proto Buffels River sediments (Miocene) and finally the marine terraces of the Buffels Marine Complex (Plio-Pleistocene) in the north.
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