Calciocopiapite

General Information: Chemical Formula:CaFe+++4(SO4)6(OH)2·19(H2O) Composition:(Molecular Weight = 1,216.15 gm)Calcium 3.30 % CaIron 18.37 % FeHydrogen 3.32 % H Sulfur 15.82 % S Oxygen 59.20 % O  Empirical Formula: CaFe3+4(SO4)6(OH)2·19(H2O) IMA Status:Approved IMA 1961Physical Properties: Color:brownish yellow or grayish yellow. Density:2.22 Diaphaniety:Transparent to Translucent Hardness:2.5-3 - Finger Nail-Calcite Luster:Pearly Streak:yellow whiteMore details...