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Generalx-ray diffraction. I need a name.

2nd Jun 2019 23:40 UTCCecil Cosse

Hi,

I need the name of someone that does x-ray diffraction on VERY tiny crystals with very, very little of specimen to begin with.

If you can get me a name and address, as well as, cost, I would be really grateful.

Cecil

2nd Jun 2019 23:47 UTCDon Saathoff Expert

Cecil, google John Attard.

3rd Jun 2019 00:24 UTCCecil Cosse

Don,

I should have mentioned John Attard's name. My mistake. I already sent specimen to him, but he couldn't do anything as the xls were too small and there was not a large enough volume. So, Attard is out.

Cecil

3rd Jun 2019 00:49 UTCDoug Schonewald

Cecil you might try Bart Cannon.

http://www.cannonmicroprobe.com/

3rd Jun 2019 00:58 UTCCecil Cosse

Doug,

Sounds good. Thanks.

Cecil

3rd Jun 2019 06:17 UTCJolyon Ralph Founder

University of Arizona has commercial xrd analytical services for collectors with modern XRD equipment including single crystal XRD. They are also the experts at Raman identification. Contact Bob Downs at U of A.

3rd Jun 2019 06:53 UTCCecil Cosse

Jolyon,

Thanks for the name. I need someone that can work on very tiny pieces of very little material. Personally collected, it came from a sandstone quarry west of Hot Springs, Arkansas back in the 80's, so it is pretty old, almost 40 years old. The pocket in the sandstone contained a cryptomelane-like material with these very tiny bright green spheres. It may be nothing more than malachite (interesting the copper being present if malachite), but still want to know.

Cecil

4th Jun 2019 06:05 UTCBart Cannon

Too small for my powder diffractometer, but I'll be getting a gandolfi camera for single crystal work. In the indefinite future.

4th Jun 2019 08:08 UTCCecil Cosse

Hi, Bart,

Just so you'll know, it is not what I think about re 'single xl work' Do you need a single xl to perform x-ray diffraction?

Hey, weren't you involved with that Canadian mine on one of the islands located north of the Arctic Circle?

Thanks,

Cecil

4th Jun 2019 11:52 UTCFranz Bernhard Expert

>>very tiny bright green spheres.<<

Go for SEM-EDS, for qualitative elemental determination only a micro-meter sized grain is necessary. I think, Kerry Day does this at a very affordable price.

Franz Bernhard

4th Jun 2019 14:58 UTCCecil Cosse

Hey, Franz,

I spoke with Kerry Day the other day. I knew he did the EDS, but wanted to see about x-ray diffraction, which turned out to be a no-go. His EDS price is very reasonable. Thanks for his name, however. I did not want to sacrifice even a tiny fragment until everything has been exhausted re x-ray diffraction. I have a name at U. of Arizona.

Cheers,

Cecil

4th Jun 2019 15:32 UTCPedro Alves Expert

Hello Cecil.

You can try Raman. It's cheap and non-destructive.

Cheers,

Pedro

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