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Gold got delivered to earth by meteors. Gold came from meteors showers 3.9 billion years ago. Half of 1% of the mantle is from meteors. Half of 1% = 20 quintillion tons. That’s 20,000,000,000,000,000,000 tons!!!!!!!!!!!!!.
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Half of 1% = 20 quintillion tons.That’s 20,000,000,000,000,000,000 tons!!!!!!!!!!!!!