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Perhamite
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| Perhamite.11711 Formula: Ca2.7 Sr.3 P4 Al7.7 Si3 O45.862 H12.68 Name: Perhamite Unit cell: 7.021 7.021 20.218 90.0 90.0 120.0 , V=863.11 Space group: P-3m1 (164) |
Mills S , Mumme G , Grey I , Bordet P , Mineralogical Magazine , 70 (2006) p.201-209, The crystal structure of perhamite, Note: H positions unknown, Locality: Emmons mine, Greenwood, Maine
