Formula: LiF
Normal halide, halite group
Specific gravity: 2.62
Hardness: 4½
Streak: White
Colour: Green-white, yellowish white, white
Solubility: Insoluble in water, not attacked by 30% hydrochloric acid (Dana)
Environments
Plutonic igneous environments
Metamorphic environments
Localities
At the type Locality, the Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Quebec, Canada, a massive
hornfels unit, its contact zone, and accompanying inclusions and xenoliths were exposed
during quarry operations. Griceite was found in sodalite inclusions at the periphery of
the contact zone of the hornfels, which is surrounded by
nepheline syenite. On a type specimen griceite occurs as late-stage botryoidal
aggregates to 1 mm on ussingite crystals associated with
sodalite, eudialyte,
sphalerite, serandite,
vuonnemite and
lovozerite
(CM 27.125-127, HOM). Griceite also occurs as inclusions in vuonnemite or
pseudomorphs of it
(Dana).
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