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ATHENA

MINERALOGY

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Mineral: RICHTERITE
Formula: Na(CaNa)Mg5Si8O22(OH)2
Crystal System: Monoclinic
Group: Amphibole supergroup, with (OH,F,Cl) dominant. Na-Ca subgroup. Richterite group
IMA Number: 2012 s.p.
References: AM 59 (1974), 518; HB2/2 (1995)
Type Locality: Långban (Langban) and Pajsberg, Värmland (Varmland, Wermland), Sweden

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