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calcium fluoride with a dazzling color range, cubic and octahedral crystals, and UV fluorescence; prized by collectors for Blue John banding.
Regional guide
Fluorite from Cave-in-Rock, IL USA
Comprehensive guide to fluorite from Cave-in-Rock
Locality guide
Cave-in-Rock
Cave-in-Rock, Illinois — premier fluorite locality in the Illinois-Kentucky Fluorspar District, famed for lustrous zoned cubic crystals and Minerva No. 1 herit…
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