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ATHENA

MINERALOGY

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Mineral: BROWNMILLERITE
Formula: Ca2(Al,Fe3+)2O5
Crystal System: Orthorhombic
Group: Perovskite supergroup. Non-stoichiometric. Brownmillerite subgroup
IMA Number: 1963-017
References: NJMM (1964), 22; HB3 (1997); EJM 17 (2005), 623
Type Locality: Ettringer Bellerberg, Mayen, Laacher See Area, Eifel, Rheinland-Pfalz, Germany

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