Stories and Traveltips

ID #1367

Diamonds and Kimberlite Pipes, Southern Africa.

Diamonds are formed by the compression and superheating of carbon deep underground, and are found exclusively in a rock known as Kimberlite – also known as blue ground because of its distinctive colour. They made their way to the surface in huge volcanic pipes that can be several kilometers across.  These pipes are mined to great depths in, for example, the Big Hole at Kimberley. The rock erodes over millions of years and ends up being washed into streams and rivers. Alluvial diamonds are thus often found far from their place of origin. The discovery of alluvial diamonds thus often leads to a treasure hunt to discover the source. AADiamond

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Last update: 2014-05-14 14:24
Author: Alan McIver
Revision: 1.3

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