Paraspurrite

General Information: Chemical Formula:Ca5(SiO4)2(CO3) Composition:(Molecular Weight = 444.57 gm)Calcium 45.08 % CaSilicon 12.64 % SiCarbon 2.70 % C Oxygen 39.59 % O  Empirical Formula: Ca5(SiO4)2(CO3) IMA Status:Approved IMA 1977 Locality:Darwin mines, Darwin, Inyo Co., California. Name Origin:Named because of it's similarity to spurrite.Physical Properties: Cleavage:[001] Indistinct Color:colorless. Density:3 Diaphaniety:Transparent Streak:whiteMore details...