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ATHENA

MINERALOGY

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Mineral: WELSHITE
Formula: Ca4Mg9Sb5+3Be3Si6(Fe3+,Al)3O20
Crystal System: Anorthic (Triclinic)
Group: Sapphirine supergroup. Rhönite group
IMA Number: 1973-019
References: MM 42 (1978), 129; HB2/2 (1995); EJM 11 (1999), 743; AM 92 (2007), 80
Type Locality: Långban (Langban) mine, Bergslagen ore distr., Filipstad, Värmland (Wermland, Varmland), Sweden

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