ATHENA MINERALOGY |
Mineral: | STILPNOMELANE |
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Formula: | K(Fe2+,Mg,Fe3+,Al)8(Si,Al)12(O,OH)27.2H2O |
Crystal System: | Monoclinic / Anorthic (Triclinic) |
Group: | Stilpnomelane group |
IMA Number: | 1971 s.p. |
References: | MM 42 (1978), 361; HB2/2 (1995) |
Type Locality: | Obergrund, Zuckmantel, Silesia, Poland |
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