Olshanskyite

General Information: Chemical Formula:Ca3(OH)2[B(OH)4]4 Composition:(Molecular Weight = 503.62 gm)Calcium 23.87 % CaBoron 8.59 % B Hydrogen 4.00 % H Oxygen 63.54 % O  Empirical Formula: Ca3B4(OH)20 Environment:Skarn. IMA Status:Approved IMA 1969 Locality:Eastern Siberia, Russia. Name Origin:Named for Yakov I. Olshansky (1912-1958), Russian geochemist.Physical Properties: Color:colorless, white, or light brown. Density:2.23 Diaphaniety:Transparent Habits:Fibrous - Crystals made up of fibers., Aggregates - Made of numerous individual crystals or clusters., Microscopic Crystals - Crystals visible only with microscopes. Hardness:4 - Fluorite Luster:Vitreous (Glassy) Streak:whiteMore details...