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ATHENA

MINERALOGY

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Mineral: GEDRITE
Formula: ▢(Mg,Fe2+)5Al2Si6Al2O22(OH)2
Crystal System: Orthorhombic
Group: Amphibole supergroup, with (OH,F,Cl) dominant. Mg-Fe-Mn subgr. Gedrite group
IMA Number: 2012 s.p.
References: AM 63 (1978), 1023; HB2/1 (1995); MM 61 (1997), 295
Type Locality: Gèdres, Héas valley, Luz-St-Sauveur, Hautes-Pyrénées, France
Comments: ▢ = vacancy

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