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Posted in response to Carnotite from John Gonzales-Lusk on February 08, 2008 at 14:50:33:

Re: Carnotite

I have never known carnotite to be fluorescent. Many secondary uranium minerals like autunite are, and these tend to be intensely green in fluorescence. However, if you crush a small sample and make a borax bead of it, you can probably get the green fluorescence. I use a Geiger counter, and if you are interested, and can give you information on making some simple devices that will enable you to see if you sample is radioactive.

With regard to cutting it: if you suspect that it is a uranium ore, cutting it is probably not a good idea, as you can ingest or inhale minute amounts of radioactive material. With a half lie of 4.5 billion years, uranium is not something you want accumulating in your body.


Art

From Dr. Art Friedman - July 04, 2008 at 11:53:23
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Message: 66694

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