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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 from the Rogerley Mine, Weardale, Co. Durham, England

27.9.2016

Gemmy, green cubes of fluorite with minor non-fluorescent galena on a light brown matrix, from the source of some of the most beautiful and brightly fluorescent fluorite in the world-  the Rogerley Mine, Frosterley, Weardale, North Pennines, County Durham, England.  The fluorescent response of this fluorite is so bright, it can be seen under daylight; a phenomenon called daylight fluorescence, which results from the UV component of sunlight stimulating a visible fluorescent response seen as a blue color change in the green fluorite cubes.  In this series of photographs, the fluorite cubes can be seen fluorescing blue under short and long wave UV, as well as under daylight in open shade.  The size of this specimen is 8.1 x 5.5 x 2.5 cm.

 

 

 

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