The world’s largest source of natural diamonds — and of more than 90 percent of all natural pink diamonds found so far — may have formed due to the breakup of Earth’s first supercontinent, researchers report September 19 in Nature Communications.
The diamond-bearing rocks of the Argyle mine in Western Australia probably formed about 1.3 billion years ago, the analysis shows, along a rift zone that sundered the supercontinent Nuna. The finding suggests that exploring ancient rift zones for diamond troves may be more worthwhile than previously thought.
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