On Sat, Feb 15, 2020 at 10:10 AM, Charles David Young wrote:
do not have radioactive Smithsonite in my collection.? If there is such a thing it is probably U in the matrix.
?
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
