gold and diamond are mined in the blanks grassland?
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The diamonds we have found so far are small and not economic, but they occur in ancient sediments that are an exact analog of the world's biggest gold deposit -- the Witwatersrand Goldfields of South Africa, which has produced more than 40 per cent of the gold ever mined on Earth," said Graham Pearson, researcher in ...06-Oct-2020
https://www.sciencedaily.com › 202...
Diamonds found with
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bwuskshei
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