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Cool thanks. Geo

Second word is Mexico. ________________________________ Sent: Sunday, February 16, 2020 8:02 AM To: [email protected] <[email protected]> Subject: Re: [XRF] Smithsonite with Uranium no but I put up a

One could hardly call that a peak. This is going to need the x-ray source to see what’s there. Dud Sent: Sunday, February 16, 2020 7:48 AM To: [email protected] Subject: Re: [XRF] Smithsonite with

No this was internal radiation only. I'll post an XRF soon.Do you detect a small peak very near 8.64 for Zn?Geo

No convincing Zn peaks in either the Si-PIN or the CdTe. Were you using Am241 to excite? Charles

no but I put up a picture of the notes on the box, on the Smithsonite thread.. I added W/U myself. Maybe you recognize the second word in the original note?Geo

Attached is a better scan as it ran overnight. I do believe Zn peak is starting to show. Nothing like real XRF tho in this case. Also a pic of the box it came in, I bough it long ago because it was

Geo, do you know what mine or district this is from? ________________________________ Sent: Saturday, February 15, 2020 3:57 PM To: [email protected] <[email protected]> Subject: Re: [XRF] Smithsonite with

Picture of the Smithsonite rock on the CdTe for a Gamma Spec Geo>K0FF

Radioactive Zinc ore. Pictures to follow, here is the Gamma Scan on Si-PIN Geo

Please do Dud Sent: Saturday, February 15, 2020 12:43 PM To: [email protected] Subject: Re: [XRF] Mystery of wulfenite Pb(MoO4) from Globe, AZ George are you going to post that scan?

Charles, that is a good piece of detective work. It is probably the coronadite that has the U. We found a small late stage vein of coronadite in one of the samples from Petaca that was scanned with

George are you going to post that scan? Charles El El sáb, feb. 15, 2020 a la(s) 1:39 p. m., <GEOelectronics@...> escribió:

Yes uranium for sure Charles.... Just ran a scan and pinpointed uranium right away by the clear Th-234 peaks and Pb X-Rays like you showed me the other day. Thanks for that. George

OK I have one. It needs a good testing with this updated gear, then I can send it for you to test and analyze. One thing I'm curious about is radium replacement in a crystal. This is really obvious

I do not have radioactive Smithsonite in my collection. If there is such a thing it is probably U in the matrix. Charles

Super cool use of XRF Charles!Do you have any radioactive Smithsonite?Geo>K0FF

Normally wulfenite is not radioactive but I found one a couple of years ago that is slightly so and I added it to my collection. The most curious thing about this specimen is that it is pitch black

Here are 2 more, these are XRF, the 63 second one is a XRF calibration run with Sr element, then the long run was XRF of the Trinitite. There were clues in the earlier? gamma spec that indicated a

See message #774 and here's another one- The calibration on this final run is close but can probably be tweaked: Geo