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We apply Raman microspectroscopy to exceptionally high-density CO 2 (+H 2 O+H 2 S) fluid inclusions containing nanocrystalline diamonds, which are present in garnet pyroxenites from Salt Lake Crater from Oahu (Hawaii), and show for the first time the presence of free diamond-bearing carbonate-rich fluids/melts, originated within the asthenospheric mantle at depths greater than...
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