THOMSENOLITE


Meaning of THOMSENOLITE in English

General Information:

Chemical Formula:

NaCaAlF6·(H2O)

Composition:

(Molecular Weight = 222.06 gm)

Sodium 10.35 % Na

Calcium 18.05 % Ca

Aluminum 12.15 % Al

Hydrogen 0.91 % H

Oxygen 7.21 % O

Fluorine 51.33 % F

Empirical Formula:

NaCaAlF6·(H2O)

Environment:

Alteration product of cryolite.

Locality:

Greenland, Ural Mountains, Russia.

Physical Properties:

Cleavage:

[001] Perfect, [110] Imperfect

Color:

colorless, white, reddish, or brownish.

Density:

2.98

Diaphaniety:

Transparent

Habits:

Pseudo Cubic - Crystals show a cubic outline., Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).,

Hardness:

2 - Gypsum

Luminescence:

Non-fluorescent.

Luster:

Vitreous - Greasy

Streak:

white

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .