Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:BIRNESSITE
Formula:Na4Mn14O27 · 9H2O
Crystal System:Orthorhombic
Strunz Nr:4/F.11-30
References:Australian Min. 6 (1992), 65; HB3 (1997)
Type Locality:Birness, Aberdeenshire, Scotland

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