Schertelite

General Information:
 Chemical Formula:
(NH4)2MgH2(PO4)2·4(H2O)
 Composition:
(Molecular Weight = 324.40 gm)
Magnesium 7.49 % Mg
Phosphorus 19.10 % P 
Hydrogen 5.59 % H 
Nitrogen 8.64 % N 
Oxygen 59.18 % O 
 Empirical Formula:
(NH4)2MgH2(PO4)2·4(H2O)
Physical Properties:
 Cleavage:
None
 Color:
colorless.
 Density:
1.83
 Diaphaniety:
Transparent
 Luster:
Vitreous (Glassy)
 Streak:
white
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