Uranopilite & Zippeite - Happy Jack Mine, White Canyon Mining District, San Juan County, Utah, USA

(UO₂)₆(SO₄)O₂(OH)₆ · 14H₂O          K₃(UO₂)₄(SO₄)₂O₃(OH) · 3H₂O

Here's another one from my personal collection and formally in the collection of Jack Nieburger: Uranopilite & Zippeite from the Happy Jack Mine, White Canyon Mining District, San Juan County, Utah, USA. This piece displays really nicely and is fluorescent under all wavelengths of UV light.

Approx. specimen size: 45mm x 33mm x 17mm

Approx. specimen activity on an SE International Ranger EXP: 56000 cpm