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ATHENA

MINERALOGY

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Mineral:PROTOFERROANTHOPHYLLITE
Name:Protoferro-anthophyllite
Formula:(Fe2+,Mn2+)2(Fe2+,Mg)5(Si4O11)2(OH)2
Crystal System:Orthorhombic
Strunz Nr:8/F.12-150
Group:Amphibole group group I: Mg, Fe, Mn, Li
References:AM 84 (1999), 196; MR 32/5 (2001), 418
Type Locality:Hirukawa, Gifu, Japan; Cheyenne Mtn area, El Paso Co., Colorado, USA

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