General Information:
Chemical Formula:
Na2Ce[Si6O14(OH)]·n(H2O), (n >= 1.5)
Composition:
(Molecular Weight = 622.63 gm)
Sodium 7.38 % Na
Cerium 22.50 % Ce
Silicon 27.06 % Si
Hydrogen 0.65 % H
Oxygen 42.40 % O
Empirical Formula:
Na2·1.5(H2O)CeSi6O14(OH)
Environment:
Cavities in sodalite zenoliths.
IMA Status:
Approved IMA 1987
Locality:
Mt. Karnasurt, Lovozero massif, Kola Peninsula, Russia.
Name Origin:
Named for Nikolai Petrovich Sazhin (1898-1969), Founder of the Russian rare-earth industry.
Physical Properties:
Cleavage:
[100] Perfect, [010] Perfect, [001] Very Good
Color:
gray, gray white, or pearl white.
Density:
2.61
Habits:
Tabular - Form dimensions are thin in one direction., Platy - Sheet forms (e.g. micas)., Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Hardness:
2.5 - Finger Nail
Luster:
Vitreous - Pearly
Streak:
white
More details...