Stibiotantalite, Uranopyrochlore: Brown Derby Mine, Quartz Creek Pegmatite Mining District, Gunnison County, Colorado, USA

Species: Stibiotantalite, Uranopyrochlore

Locality: Brown Derby Mine, Quartz Creek Pegmatite Mining District, Gunnison County, Colorado, USA

Dimensions: 4.6 x 3.1 x 1.4 cm.

Ex. Hal Miller Collection

Very unusual, solid specimen of waxy black Uranopyrochlore associated with black Stibiotantalite from the Brown Derby Mine, Quartz Creek Pegmatite Mining District, Gunnison County, Colorado, USA. Measures ~35,000 CPM on my Ludlum Model 3 with the 44-9 pancake probe. Rare!!