General Information:
Chemical Formula:
LiF
Composition:
(Molecular Weight = 25.94 gm)
Lithium 26.76 % Li
Fluorine 73.24 % F
Empirical Formula:
LiF
Environment:
In a sodalite inclusion in nepheline syenite.
IMA Status:
Approved IMA
Locality:
Proudrette quarry, Mt. St. Hilaire, Quebec, Canada.
Name Origin:
Named for Joel D. Grice (1946-), curator of minerals, Canadian Museum of Hature, Ottawa, Canada.
Physical Properties:
Cleavage:
[100] Good, [100] Good, [100] Good
Color:
green white, yellowish white, or white.
Density:
2.62
Diaphaniety:
Translucent
Habits:
Inclusions - Generally found as inclusions in other minerals., Microscopic Crystals - Crystals visible only with microscopes.,
Hardness:
4.5 - Between Fluorite and Apatite
Luminescence:
Sometimes Fluorescent, Short UV=light yellow.
Luster:
Vitreous - Dull
Streak:
white
More details...