from The Century Dictionary.
- noun A kind of solid bitumen found in the Uintah Mountains, Utah.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun geology A black, insoluble,
carbonaceousmaterial formed from the metamorphosisof shale oil.
Sorry, no etymologies found.
It superficially resembles another asphalt (wurtzilite), and has frequently been confused with the jet variety of lignite.