Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:SIMPSONITE
Formula:Al4(Ta,Nb)3(O,OH,F)14
Crystal System:Rhomboedral (Trigonal)
Strunz Nr:4/D.27-20
References:MM 33 (1963), 458; HB3 (1997)
Type Locality:Tabba Tabba, Western Australia, Australia

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