Autunite: Gibbonsville Mining District, Lemhi County, Idaho, USA

Species: Autunite

Locality: Gibbonsville Mining District, Lemhi County, Idaho, USA

Dimensions: 4.6 x 3.1 x 1.8 cm.

Ex. Hal Miller Collection

Nice specimen of greenish crystallized Autunite on matrix from the Gibbonsville Mining District, Lemhi County, Idaho, USA. Rare locality! Measures ~10,000 CPM on my Ludlum Model 3 with the 44-9 pancake probe.