ATHENA MINERALOGY |
Mineral: | EKMANITE = a Mn rich STILPNOMELANE |
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Formula: | (Fe2+,Mg,Mn,Fe3+)3(Si,Al)4O10(OH)2.2H2O (?) |
Crystal System: | Orthorhombic |
References: | AM 39 (1954), 946 |
Type Locality: | Gryhytte, Sweden |
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