from The Century Dictionary and Cyclopedia
- n. A hydrated uranate of thorium, yttrium, and lead, occurring in massive forms with a velvet-black color and high specific gravity. It is found in Llano county, Texas, associated with gadolinito, fergusonite, and other rare species.
- n. Like other varieties of uraninite, this mineral exhibits marked radioactivity.
Sorry, no etymologies found.