Newberyite

General Information:
 Chemical Formula:
Mg(PO3OH)·3(H2O)
 Composition:
(Molecular Weight = 174.33 gm)
Magnesium 13.94 % Mg
Phosphorus 17.77 % P 
Hydrogen 4.05 % H 
Oxygen 64.24 % O 
 Empirical Formula:
Mg(PO3OH)·3(H2O)
Physical Properties:
 Cleavage:
[010] Perfect, [001] Indistinct
 Color:
colorless, gray brown, or grayish.
 Density:
2.1
 Diaphaniety:
Transparent
 Hardness:
3-3.5 - Calcite-Copper Penny
 Luster:
Vitreous (Glassy)
 Streak:
white
More details...