New torbernite specimen with spectrum

[Geoff]

I recently acquired a new specimen of torbernite from Calo, la Coruna, Spain. It’s about 60x35mm, and very hot. Attached are two pictures and the gamma spectrum showing radium and daughters.

D0EBC973-9A06-4C07-9E74-09219D4DFE97.jpeg (21.23 KiB) Viewed 5815 times

[pilgrim]

Nice sample! What about weight and count rate ?

[Geoff]

With my Ludlum model 18 and a gm probe adjusted for 0cpm background, My Feb 2015 1uCi 133Ba source reads 0.5mR/hr. The torbernite reads 300mR/hr. Weight is around 90 grams.

[Go-Figure]

That's a nice looking sample!

Massimo