Species: Carnotite
Locality: Uruvan Mining District, Montrose County, Colorado, USA
Dimensions: 19.1 x 5.5 x 3.6 – 514 grams
Ex. Bob Werner Collection
Quite large, very rich specimen of bright yellow Carnotite (showing some tiny but well-formed crystals!) from the classic Uruvan Mining District, Montrose County, Colorado, USA. Not powdery unlike a lot of samples of this mineral. Measures ~90,000 CPM on my Ludlum Model 3 Counter with the 44-9 probe. Rare!