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American Mineralogist: Kenorozhdestvenskayaite-(Fe): A new tetrahedrite group mineral containing a natural [Ag6]4+ cluster and its relationship to the synthetic ternary phosphide (Ag6M4P12)M'6 https://t.co/PNamKNEniQ by Qu et al. https://t.co/dZ5DWt9aDH