Carnotite and other uranium minerals from unknown location. 30k CPM on Ludlum Model 3 with 44-9 probe. 10 grams. 1.6inx1.1inx0.2in
Carnotite and other uranium minerals from unknown location. 30k CPM on Ludlum Model 3 with 44-9 probe. 10 grams. 1.6inx1.1inx0.2in
