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ATHENA

MINERALOGY

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Mineral: SANIDINE
Formula: (K,Na)(Si,Al)3O8
Crystal System: Monoclinic
Group: Feldspar group
IMA Number: 1808
References: AM 63 (1978), 1264; HB2/2 (1995)
Type Locality: Drachenfels, Eifel, Rheinland-Pfalz, Germany
Comments: A high temperature disordered Al-Si orthoclase

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