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ATHENA

MINERALOGY

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Mineral: WERMLANDITE
Formula: Mg7Al2(OH)18[Ca(H2O)6][SO4]2.6H2O
Crystal System: Rhombohedral (Trigonal)
Group: Hydrotalcite supergroup. Wermlandite group
IMA Number: 1970-007
References: AM 80 (1995), 408; HB5 (2003); MM 76/5 (2012), 1289
Type Locality: Långban (Langban) mine, Bergslagen ore distr., Filipstad, Värmland (Varmland, Wermland), Sweden

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