fluorite

(flôrīt′, flo̵or-)

noun

a crystalline mineral, CaF, with perfect cleavage, used as a flux, in glassmaking, etc. and as the principal source of fluorine; calcium fluoride

Origin: fluor(o)- + -ite

See fluorite in American Heritage Dictionary 4

noun
A mineral, essentially CaF2, that is often fluorescent in ultraviolet light and occurs in light green, blue, yellow, brown, and colorless forms. Also called fluor, fluorspar.

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