Uraninite var. Pitchblende: Radium Vein, 1400′ Level, Caribou mine, Boulder County Colorado USA

Species: Uraninite var. Pitchblende

Locality: Radium Vein, 1400′ Level, Caribou mine, Boulder County Colorado USA

Dimensions: 3.1 x 2.9 x 1.4 cm, 26 grams 

Ex. Hal Miller Collection

Rich specimen of Uraninite var. Pitchblende from the Radium Vein, 1400′ Level, Caribou mine, Boulder County Colorado USA. Very rare locality specimen; this is the same material that was shipped to Europe in the late 19th century for Marie Curie’s Radium experiments! Measures ~65,000 CPM on my Ludlum Model 3 Counter with the 44-9 probe. Rare!