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Nature’s Rainbows is a non-commercial web site maintained entirely by volunteer hobbyists and contributors.  Our mission is to provide information about UV and luminescence, premium fluorescent mineral photos, and a fluorescent mineral database for the enjoyment of FL mineral collectors around the world.  Information on this web site is covered under a Creative Commons License.


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Fluorite with Hydrocarbon Inclusions, Cave-In-Rock, Illinois

24.6.2016

Cluster of purple cubic fluorite crystals, from Cave-In-Rock, Hardin County, Illinois.  These fluorite cubes show a blue fluorescent response under all wavelengths of UV light, but also contain hydrocarbon inclusions that fluoresce a bright white color.  93.7 x 68.8 x 45.2 mm, 198 gms.

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