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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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Opal, The Andalusia Mine, California

30.5.2016

 

 

 

My then eight year old daughter and I explored the old Andalusia Mine tailings for fluorescents. Never before had we found so many interesting and beautiful rocks that had absolutely no fluorescence. Ironically, right next to where we parked the car was an odd boulder. We hit it with our lamp and it glowed. I cracked it up so I could get it in the car, and cracked further when we got home. This is by far the best chuck. Experts have looked at it and say it's opal. That said, I think there's some chalcedony mixed in. Just love the material, especially as no one else has anything like it.

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