Uraninite var. Pitchblende

Rich specimen of black Pitchblende in hematite-stained gneiss rock matrix from this obscure and very rare Colorado locality located a stone’s throw from metro Denver. Measures ~50,000 CPM on my Ludlum Model 3 Counter with the 44-9 ‘pancake’ probe. From the collection of noted Uranium mineral specialist Greg Boles. Rare!