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ATHENA

MINERALOGY

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Mineral: TURKESTANITE
Formula: Th(Ca,Na)2(K1-x▢x)Si8O20.nH2O
Crystal System: Quadradic (Tetragonal)
Group: Steacyite group
IMA Number: 1996-036
References: ZVMO 126/6 (1997), 45; AM 83 (1998), 1348; MR 2 (2000), 204; MM 87 (2023), 252
Type Locality: Djelisu massif, Osh region, Kyrgyzstan and Dara-i-Pioz (Darai-Piyoz) massif, Garmskiy region, Tien Shan, Tajikistan
Comments: ▢ = vacancy

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