Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:BERTRANDITE
Formula:Be4Si2O7(OH)2
Crystal System:Orthorhombic
Strunz Nr:8/C.07-10
References:L 5 (1989), 6; HB2/1 (1995)
Type Locality:Petit-Port and Barbin, Nantes, Loire-Atlantique, France

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