Uraninite, Carnotite, Tyuyamunite - Mi Vida Mine, Lisbon Valley Mining District, San Juan County, Utah, USA

UO₂      K₂(UO₂)₂(VO₄)₂ · 3H₂O          Ca(UO₂)₂(VO₄)₂ · 5-8H₂O

Here's another large one from my personal collection. A beautiful piece of Uraninite, Carnotite, Tyuyamunite and other unidentified uranium-minerals from the famous Mi Vida Mine, San Juan County, Utah. This is a great display specimen that has very rich mineralization, and also appears to potentially have some petrified wood as well as some fluorescent areas.

Approx. specimen size: 140mm x 120mm x 30mm

Approx. specimen activity: 21000 cpm