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2016-11-15 · Abundant THH forms, di-trigonal shapes of resorbed {111}-faces, glossy appearances and circular pits often observed on the same stone are very similar to diamond features from volcaniclastic kimberlite facies elsewhere and to products of dissolution experiments in the presence of an H 2 O-fluid (Fedortchouk et al., 2007, Fedortchouk et al., 2010).
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