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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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Pyromorphite, Bunker Hill Mine, Kellogg, Idaho




This little specimen set off a fire storm last summer, and the current pyro craze on eBay has its origins with this little guy.


I had read that pyromorphites sometime fluorescenced so we gambled on a small, natural light piece on an online auction. We won! Yeah! But when it arrived, nada. No glow  in shortwave or longwave. Bummer.


A few weeks (or months) later, on a whim, we hit it with midwave and it exploded in color. We were stunned. Who knew there was a mineral that pretty much only fluoresced in midwave? Certainly not the experts! Leave it to the ignorant novices to do a little research and hope for the unexpected.


As mentioned, this is a thumbnail piece, and shown in midwave and natural.



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