This piece is quite special and as good as it gets for colorful Utah Uranium species. It has high activity and great crystallization. The orange crust is an anomaly and normally I would go with Zinczippeite, however it is not UV reactive. The yellow Zippeite is UV reactive, there is wonderful light green Johannite with darker Green Pseugojohannite as well as blue Copper crystals and well crystallized Gypsum. The host rock contains high grade Uraninite which (depending on how close you want to get to the delicate crystals) can push the Radiacode 110 to 400,000 cpm! From the historic and rich Markey Mine in Utah. Rare!
7x4.8x4 cm
91 grams
400,000 cpm on rc110
Markey Mine, Utah
N4