Mineralpedia Details for Uranopilite
An allusion to its felt-like appearance, Uranopilite is named for the Greek pilos, meaning “felt,” and for its uranium content. Found in several locations, Uranopilite is locally abundant as a secondary mineral formed during the acid conditions produced by the oxidation of sulfides where uraninite is present. It is also possible that Uraopilite is post-mine product. Uranopilite is strongly radioactive and will strongly fluoresce a yellow to yellow-green under short- and long-wave ultraviolet light.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/uranopilite.pdf
Uranopilite from Apex mine, Lander Co., Nevada, United States
- Special Info
- EDS confirmed, Radioactive!
Flat lying sprays are to about 1mm.
Bright yellow powdery coatings.