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ATHENA

MINERALOGY

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Mineral: NATROAPOPHYLLITE = APOPHYLLITE-(NaF)
Formula: NaCa4Si8O20F.8H2O
Crystal System: Orthorhombic
References: AM 66 (1981), 410; L 3 (1981), 5; HB2/2 (1995); MR 39/2 (2008), 131
Type Locality: Sampo mine, Takahashi, Okayama, Honshu, Japan

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