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