Hanksite

General Information: Chemical Formula:KNa22(SO4)9(CO3)2Cl Composition:(Molecular Weight = 1,564.92 gm)Potassium 2.50 % K Sodium 32.32 % NaCarbon 1.54 % C Sulfur 18.44 % S Chlorine 2.27 % ClOxygen 42.94 % O  Empirical Formula: KNa22(SO4)9(CO3)2Cl Environment:Continental evaporite deposits. Locality:Searles Lake, San Bernardino Co. California.Physical Properties: Cleavage:[0001] Good Color:colorless, gray, grayish black, yellow, or yellowish white. Density:2.5 Diaphaniety:Transparent Habits:Crystalline - Coarse - Occurs as well-formed coarse sized crystals., , Hardness:3 - Calcite Luminescence:Non-fluorescent. Luster:Vitreous - Greasy Streak:whiteMore details...