Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:HOLTITE
Formula:Al6(Al,Ta)(Si,Sb)3BO15(O,OH)2
Crystal System:Orthorhombic
Strunz Nr:8/B.31-30
Group:Dumortierite Group
References:MM 38 (1971), 21; HB2/1 (1995); AM 91 (2006), 221
Type Locality:Greenbushes, Western Australia, Australia

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