Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:HOLTSTAMITE
Formula:Ca3(Al,Mn3+)2(SiO4)3-x(H4O4)x
Crystal System:Quadratic (Tetragonal)
Strunz Nr:8/A.08-158
Group:Garnet Group related
References:EJM 17 (2005), 375; AM 90 (2005), 1946
Type Locality:Wessels mine, Kalahari Mn field, Kuruman Hill, Cape Province, South Africa

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