General Information:
Chemical Formula:
(Na,Ca)3(Ca,Ce)4Ti4(Si2O7)2(O,F)4
Composition:
(Molecular Weight = 936.98 gm)
Sodium 5.52 % Na
Calcium 16.04 % Ca
Cerium 14.95 % Ce
Titanium 20.44 % Ti
Silicon 11.99 % Si
Oxygen 29.03 % O
Fluorine 2.03 % F
Empirical Formula:
Na2.25Ca3.75CeTi4(Si2O7)2O3F
Environment:
Mineral in sodalite-syenite rocks.
Locality:
Julianehaab district, Greenland.
Physical Properties:
Cleavage:
[100] Good
Color:
yellow, yellowish green, or brown.
Density:
3.5
Diaphaniety:
Transparent to translucent
Habits:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Tabular - Form dimensions are thin in one direction.,
Hardness:
5 - Apatite
Luster:
Vitreous (Glassy)
Streak:
yellow white
More details...