Nastrophite

General Information:
 Chemical Formula:
Na(Sr,Ba)(PO4)·9(H2O)
 Composition:
(Molecular Weight = 380.15 gm)
Barium 9.03 % Ba
Sodium 6.05 % Na
Strontium 17.29 % Sr
Phosphorus 8.15 % P 
Hydrogen 4.77 % H 
Oxygen 54.71 % O 
 Empirical Formula:
NaSr0.75Ba0.25(PO4)·9(H2O)
 IMA Status:
Approved IMA 1981
Physical Properties:
 Cleavage:
None
 Color:
colorless.
 Density:
2.05
 Diaphaniety:
Transparent
 Hardness:
2 - Gypsum
 Luster:
Vitreous (Glassy)
 Streak:
white
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