General Information:
Chemical Formula:
Na3(Ce,La)4(Ti,Nb)2(SiO4)2(CO3)3O4(OH)·2(H2O)
Composition:
(Molecular Weight = 1,227.72 gm)
Sodium 5.62 % Na
Lanthanum 11.31 % La
Cerium 34.24 % Ce
Titanium 5.85 % Ti
Niobium 3.78 % Nb
Silicon 4.58 % Si
Hydrogen 0.41 % H
Carbon 2.93 % C
Oxygen 31.28 % O
Empirical Formula:
Na3Ce3LaTi1.5Nb0.5(SiO4)2(CO3)3O4(OH)·2(H2O)
IMA Status:
Approved IMA 1987
Physical Properties:
Cleavage:
None
Color:
brownish yellow or greenish yellow.
Density:
3.7
Hardness:
3 - Calcite
Luster:
Vitreous (Glassy)
Streak:
white
More details...