This is a large and showy piece of Uraninite reading just over 1 MCPM on RC110 at the hotest point . It has several mineral species on it that are enjoyable under magnification. Rare piece not often presented for sale in this size! Andersonite and Zippeite with other possible species.
1 Million CPM on Radiacode 110
17x16x3 cm
1608 grams
Utah