Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:POVONDRAITE
Formula:NaFe3+3Fe3+6(BO3)3Si6O18(OH,O)4
Crystal System:Rhomboedral (Trigonal)
Strunz Nr:8/E.19-75
Group:Tourmaline Group
References:AM 64 (1979), 945; HB2/2 (1995); NM 90-94 (1997)
Type Locality:San Francisco mine, Aranibar, Alto Chapare, Villa Tunari, Cochabamba, Bolivia

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