Parahopeite

General Information: Chemical Formula:Zn3(PO4)2·4(H2O) Composition:(Molecular Weight = 458.17 gm)Zinc 42.82 % ZnPhosphorus 13.52 % P Hydrogen 1.76 % H Oxygen 41.90 % O  Empirical Formula: Zn3(PO4)2·4(H2O)Physical Properties: Cleavage:[???] Distinct Color:colorless. Density:3.3 Diaphaniety:Transparent Habits:Striated - Parallel lines on crystal surface or cleavage face., , Hardness:3.5 - Copper Penny Luminescence:Non-fluorescent. Luster:Vitreous - Pearly Streak:whiteMore details...