Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:DORRITE
Formula:Ca2Mg2Fe3+4Si2Al4O20
Crystal System:Anorthic (Triclinic)
Strunz Nr:8/F.14-40
Group:Aenigmatite Group
References:AM 73 (1988), 1440; HB2/1 (1995); EJM 11 (1999), 743
Type Locality:Durham Ranch, Gillette, Reno Junction, Wyoming, USA

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