Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:WELSHITE
Formula:Ca4Mg9Sb5+3Be3Si6(Fe3+,Al)3O20
Crystal System:Anorthic (Triclinic)
Strunz Nr:8/F.14-70
Group:Aenigmatite Group
References:MM 42 (1978), 129; HB2/2 (1995); EJM 11 (1999), 743; AM 92 (2007), 80
Type Locality:Långban mine, Bergslagen ore distr., Filipstad, Värmland (Wermland), Sweden

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