Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:ARAPOVITE
Formula:(U,Th)(Ca,Na)2(K1-x[]x)Si8O20 · H2O (x=0.5)
Crystal System:Quadratic (Tetragonal)
Strunz Nr:7/E.10-50
Group:Iraquite Group
References:New Data Min. 39 (2004), 14; CM 42 (2003), 1005; AM 91 (2006), 216
Type Locality:Moraine of the Dara-i-Pioz (Darai-Piyoz) glacier, Garm region, Tien Shan, Tajikistan
Comments:[] = vacancy

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