Radioactive Ore, Yellow, Orange and Green Secondary Uranium Minerals; 3000 dpm!

Description

This rather unobtrusive looking specimen might have easily been overlooked, but a reading of 3000 dpm on my Geiger counter caused me to pick it up.  It measure about 2" x 1.5" x 0.75" and weighs 38.87 g.  The yellow, orange and green coating on one of the surfaces suggests weathering of a primary uranium oxide to secondary uranium minerals - gummite.