Uraninite var. Pitchblende, Hematite: Schwartzwalder mine, Golden, Jefferson County, Colorado USA

Description

Species: Uraninite var. Pitchblende, Hematite

Locality: Schwartzwalder mine, Golden, Jefferson County, Colorado USA

Size: 8 x 6 x 4.5 cm. (254 grams)

Ex. Jack Nieburger Collection

A nice rich specimen of high-grade uranium ore, cut on one face, from the famous Schwartzwalder mine, Golden, Jefferson County, Colorado. Very nice example of this uncommon material. Measures ~100,000 CPM on my Ludlum Model 3 counter with the 44-9 probe. Rare!