* Astronomy

The world's richest source of platinum and related metals is an enigmatic geological structure in South Africa known as the Bushveld Complex. This complex of ancient magmas is known to have formed some two billion years ago, but the source of its metallic riches has been a matter of scientific dispute. Now researchers from the Carnegie Institution and the University of Cape Town have traced the origin of the unique ore deposits by using another of South Africa's treasures - diamonds.
The study, published in the 12 June issue of Nature, suggests that the source of these valuable ores may be ancient parts of the mantle beneath the African continent.

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