General Information:
Chemical Formula:
Ca7(SiO4)3(PO4)2
Composition:
(Molecular Weight = 746.74 gm)
Calcium 37.57 % Ca
Silicon 11.28 % Si
Phosphorus 8.30 % P
Oxygen 42.85 % O
Empirical Formula:
Ca7(SiO4)3(PO4)2
Environment:
Sedimentary phosphate deposits.
IMA Status:
Approved IMA 1977
Locality:
Lowermost portion of the Hatrarum formation, Israel.
Name Origin:
Named for G. Nagelschmidt, who first described the synthetic compound in 1937.
Physical Properties:
Cleavage:
[001] Good
Color:
brown, colorless, yellowish white, or light yellow.
Density:
3.065
Diaphaniety:
Transparent
Habits:
Anhedral Grains - Granular minerals without the expression of crystal shapes, ,
Luster:
Vitreous (Glassy)
Streak:
white
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