General Information:
Chemical Formula:
Na4SnBe2Si6O18·2(H2O)
Composition:
(Molecular Weight = 721.23 gm)
Sodium 12.75 % Na
Beryllium 2.50 % Be
Silicon 23.36 % Si
Tin 16.46 % Sn
Hydrogen 0.56 % H
Oxygen 44.37 % O
Empirical Formula:
Na4SnBe2Si6O18·2(H2O)
Environment:
Nepheline syenite.
IMA Status:
Approved IMA 1965
Locality:
Nakalaq in the Ilimaussaq intrusion complex, Greenland.
Name Origin:
Named for Henning Sorensen (1926-), emeritus professor, Hakkaido University, Sapporo.
Physical Properties:
Cleavage:
[???] Distinct, [???] Distinct
Color:
colorless, pinkish, or milky white.
Density:
2.9
Diaphaniety:
Transparent to Translucent
Habits:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., ,
Hardness:
5.5 - Knife Blade
Luminescence:
Fluorescent.
Luster:
Vitreous - Silky
Streak:
white
More details...