Bearsite

General Information: Chemical Formula:Be2(AsO4)(OH)·4(H2O) Composition:(Molecular Weight = 246.01 gm)Beryllium 7.33 % BeArsenic 30.45 % AsHydrogen 3.69 % H Oxygen 58.53 % O  Empirical Formula: Be2(AsO4)(OH)·4(H2O) Environment:Oxidation zone of a polymetallic deposit. IMA Status:Approved IMA 1962 Locality:Kazakhstan. Name Origin:Named for the composition (Be, Arsenic).Physical Properties: Color:white. Density:1.8 - 2, Average = 1.9 Diaphaniety:Translucent Habits:Encrustations - Forms crust-like aggregates on matrix., Fibrous - Crystals made up of fibers., Striated - Parallel lines on crystal surface or cleavage face. Streak:whiteMore details...