Cryolite (Kryolite), Ceramic Low Fire Flux, FreeShip.

Cryolite (Kryolite), Ceramic Low Fire Flux, FreeShip.

$6.44
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Cryolite is an unusual mineral with several uses. It is a "halide" mineral, along with fluorite, which have some similar properties. It shares some of the same uses in the arts community, including glassmaking, enameling, and limited use in ceramic glazes. Some synonyms are: kryolite, sodium aluminum fluoride, Greenland spar, icestone, and ice stone. Too rare to mine, it's produced synthetically (made from the more common fluorite). The Wikipedia article says "Due to its rarity it is possibly the only mineral on Earth ever to be mined to commercial extinction."...(see more)  

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