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25mm diameter but 10mm thick, and much heavier than a normal test disk.

Maybe.

WDS is definitely on topic Steve, We welcome any and all threads concerning the practice.One of the things I do is service the Tel-X-Ometer unit, it is a sort of college level WDS and all around X-Ray

I was talking to Mike Spilde at UNM about mineral analyses for some of the low Z elements like Be, since you can't do that with xrf. He gave me some information about how he does it with this WDS

Here is scan again ref message #773 Geo

Attached is a fresh .mca scan of the larger one of the 2 pieces of unusual Trinitite. This scan is of a surface, the earlier scan above (just a picture) was of an edge. The edge is most interesting

Concerning the 13-17 keV X-Rays in Trinitite. When we detect Np- X-Rays, where do they come from? One way is from XRFing Neptunium element by adding energy to it. The other obvious way is by

Yep, that's the one and only I've found too. Pretty sure that was Jon R's work for Bill K-s book.Sure would like to see many more HPGe Trinititte scans, especially of matereril that is not sand.Geo

Send the mca files with your pictures and a brief write up of the set up. Dud Sent: Tuesday, February 11, 2020 12:18 PM To: [email protected] Subject: Re: [XRF] Trinitite Ok this one IS Trinitite,

Pretty cool Geo. Attached is a part of the HP-Ge scan of trinitite in the Pittauerova paper, the peaks in grey are x-rays. Interesting. Steve ________________________________ Sent: Tuesday, February

Ok this one IS Trinitite, but an unusual form, perhaps unique, I suspect this has no Europium, etc. but does have the usual plutonium daughters and Cs-137 fission

Dud, Gunnar is in room 266 at this venue. He has a lot of interesting stuff including petscheckite associated with columbite-Fe. Perhaps you would have better luck understanding his mineral id

Not Trinitite, but a tool I use for calibration of the instruments when testing Trinitite. Uranium L and y (gamma) Lines: Geo>K0FF

Thanks for the offer and for the sodium offer.I'll keep that in mind and appreciate. Right now I'm swamped with re-running all my present samples on the Si-PIN.Say Steve, do you know Bruze?Geo>K0FF

Charles, I can’t tell if there is any Th there from the XRF. Run a gamma spec and see. It’s interesting that there is some Ba there which interferes with the Ti Where is he located I’d like

Late to the party, sorry, was Ti found?Geo

Sorry that I forgot to attach the .mca file. Here it is. So I went back to the dealer today. Gunnar Faerber is a highly experienced collector and has his own analysis equipment. Unfortunately,

If you need a chunk or monazite, let me know, I've got plenty of it. ________________________________ Sent: Monday, February 10, 2020 8:25 PM To: [email protected] <[email protected]> Subject: Re: [XRF]

You are correct Geo, those are not very accurate. Charles ran a specimen of xenotime from Madagascar that I had in my collection for years, a rather expensive one. It may have been from Madagascar so