Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:APOPHYLLITE-(KF)
Formula:(K,Na)Ca4Si8O20(F,OH) · 8H2O
Crystal System:Orthorhombic
Strunz Nr:8/H.01-20
Group:Apophyllite Group
References:MR 9 (1978), 95; L 3 (1981), 5; HB2/1 (1995); MR 39/2 (2008), 131

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