Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:TOPAZ
Formula:Al2SiO4(F,OH)2
Crystal System:Orthorhombic
Strunz Nr:8/B.02-70
References:MM 43 (1980), 943; HB2/2 (1995)

Topaz (2 x 0.7 cm)
Minas Gerais, Brazil
Coll. and Photo © John Veevaert, Trinity Minerals
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