Hannayite

General Information: Chemical Formula:(NH4)2Mg3H4(PO4)4·8(H2O) Composition:(Molecular Weight = 637.03 gm)Magnesium 11.45 % MgPhosphorus 19.45 % P Hydrogen 4.43 % H Nitrogen 4.40 % N Oxygen 60.28 % O  Empirical Formula: (NH4)2Mg3H4(PO4)4·8(H2O)Physical Properties: Cleavage:[001] Perfect, [110] Indistinct, [110] Indistinct Color:yellow. Density:2.03 Diaphaniety:Transparent Hardness:2-3 - Gypsum-Calcite Luster:Vitreous (Glassy) Streak:whiteMore details...

(NH4)2Mg3H4(PO4)4 8(H2O)