Rare Fluorite from the Crystal Mine, Cave-In
The Crystal Mine, one of many fluorspar mines in the historic Cave-In-Rock mining district of Southern Illinois, is not a well-known location for the production of fluorescent mineral specimens. ... The size of this plate of fluorite crystals is 109 x 108 x 28 mm and it weighs 333grams. This specimen displays best under mid and long wave UV ...
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