Laplandite-(Ce)

General Information:
 Chemical Formula:
Na4CeTiPSi7O22·5(H2O)
 Composition:
(Molecular Weight = 918.62 gm)
Sodium 10.01 % Na
Cerium 15.25 % Ce
Titanium 5.21 % Ti
Silicon 21.40 % Si
Hydrogen 1.10 % H 
Oxygen 47.03 % O 
 Empirical Formula:
Na4CeTiSi7O22·5(H2O)
 IMA Status:
Approved IMA 1987
Physical Properties:
 Cleavage:
None
 Color:
bluish gray, yellow gray, or light gray.
 Density:
2.83
 Hardness:
2-3 - Gypsum-Calcite
 Luster:
Vitreous - Greasy
 Streak:
white
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