Learn about Fluorite
calcium fluoride with a dazzling color range, cubic and octahedral crystals, and UV fluorescence; prized by collectors for Blue John banding.Fluorite from Minerva No. 1 Mine, Rosiclare Level, Ozark-Mahoning Co., Cave-in-Rock, Southern Illinois
Minerva No. 1 Mine fluorite — renowned locality for vibrant, color-zoned crystals, classic habit, and a storied collecting history with notable museum finds.Minerva No. 1 Mine
A collector's guide to Minerva No. 1 Mine, USA: its geology, mining history and notable minerals, illustrated with the 725 specimens documented from this locality on EarthWonders.
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