FMF - Friends of Minerals Forum, discussion and message board

[Maxilos]

Hi,

I'm going to a mineralmarket/exchange on the 14th of November. I already have seven fluorising minerals (3 X fluorite, anglesite, aragonite ruby and celestine). I'd like to know some (maybe bit more expensive) minerals witch will do some nice coulors under long wave-UV

[Tobi]

Hi,

i also used to collect fluorescent minerals in the past and built a UV cabinet with long-lave light. Besides the species you mentioned, i can recommend cerussite from Mibladen/Morocco (yellow fluorescent), willemite from Franklin/New Jersey (flashy green), adamite from Ojuela Mine/Mexico (strong green), Canadian hackmanite (flashy pink) and scapolite (flashy yellow/orange), green fluorite from Mexico (blue), tremolites from New York (pink and red) and of course a lot of other fluorites and calcites. Sorry not to have all the full localites, but those pieces were just bulk ware for UV purposes and i didn't mind :-/ And if you have the chance to get German minerals: Calcite from Juchem quarry (yellow) and uranocircite* from Streuberg/Saxony (extremely flashy neon green/yellow) are also nice under long-wave UV light.
________
* radioactive!

If the mineral market/exchange is large, you'll maybe have the chance to find a dealer who has some special UV minerals. If not, there are also many dealers on the net who offer them.

Cheers!

[alfredo]

Some secondary uranium minerals, like autunite, are bright under longwave UV.
Also some organic minerals from Kladno, and other organics like amber, and quartz with petroleum inclusions (like the ones from Baluchistan and elsewhere).

[Jesse Fisher]

Fluorite from any of the various mines in the Weardale region of Northern England will fluoresce a bright blue-white under LWUV.

[Paul Bordovsky]

Meionite (wernerite) from Canada is bright yellow, one of the brightest LW minerals.

Green sodalite from Greenland has an intense orange/yellow color like that of a glowing ember.
Is also tenebrescent.

Terlingua type calcite from either Terlingua, Texas; Boquillas, Mexico; or Llano, Texas; or a few other localities has a pink color under LW, blue under SW, and phophorescence.

I also have an emerald in matrix from Columbia. It has a thin blue flourescence where the matrix was glued around the crystal.......<grin>

And as Jesse said, the Weardale fluorites from England will fluoresce even in daylight.

[Jesse Fisher]

Yes, many fluorites from the Weardale region are so strongly fluorescent that they will show a response to the UV present in daylight - known appropriately as "daylight fluorescence." The term "fluorescence" was coined by Stokes in 1852 based on his experiments involving the light emitting behavior of fluorite from this region. Below are tow photos of a fluorite specimen from the Rogerley Mine (recovered by yours truly a couple years ago). The first is taken in daylight outside our cottage in Weardale and the second was taken in the studio using "daylight-spectrum" fluorescent lighting.

[Maxilos]

Thank you all very much,

I have been looking on the internet for all the names you mentioned. I like those pictures of secundairy uranium minerals under UV-light, so bright.

Mark