Zincsilite

General Information: Chemical Formula:Zn3Si4O10(OH)2·4(H2O) (?) Composition:(Molecular Weight = 574.58 gm)Zinc 34.14 % ZnSilicon 19.55 % SiHydrogen 1.75 % H Oxygen 44.55 % O  Empirical Formula: Zn3Si4O10(OH)2·4(H2O) Environment:Pseudomorphs after diopside in a galena-sphalerite-chalcopyrite skarn. Forms a series with sauconite. IMA Status:Approved IMA 1960 Locality:Batystau, central Kazakhstan. Name Origin:Name for the composition (Zinc Silicate).Physical Properties: Cleavage:[001] Perfect Color:bluish white, white, or greenish white. Density:2.61 - 2.71, Average = 2.66 Diaphaniety:Translucent to Opaque Habits:Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite)., , Hardness:1.5-2 - Talc-Gypsum Luster:Pearly Streak:whiteMore details...