The history of the discovery of the rock type now known as kimberlite is intricately interwoven with events following the discovery of alluvial diamonds in the vicinity of the confluence of the Vaal, Orange, and Riet Rivers of South Africa in 1866-1867. The ebb and flow of prospecting activity between these alluvial deposits and those which were eventually recognized as kimberlite is described in detail by Roberts (1976), Lenzen (1980), and Wilson (1982).
KeywordsAlkaline Rock Historical Aspect Ultramafic Xenolith Ultrapotassic Rock Prospect Activity
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