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ATHENA

MINERALOGY

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Mineral: JOHANNSENITE
Formula: CaMnSi2O6
Crystal System: Monoclinic
Group: Pyroxene group. Clinopyroxene subgroup
IMA Number: 1988 s.p.
References: DAN Earth Sci. 312 (1990), 213; HB2/1 (1995)
Type Locality: Bohemia mining distr., Lane Co., Oregon, USA

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