Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:HELVITE
Formula:Mn4Be3(SiO4)3S
Crystal System:Cubic
Strunz Nr:8/J.12-20
Group:Cancrinite-Sodalite Group Sodalite Subgroup
References:MM 40 (1976), 627; HB2/1 (1995)
Type Locality:Schwarzenberg, Sachsen (Saxony), Germany

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