An asphaltite, one of the purest natural bitumens. The specific gravity is 1.05 to 1.10. It is used in japan and other varnishes and for waterproofing.
A pure asphalt found mainly in Utah.
Trademark name for uintaite (or uintahite), a black, brilliantly lustrous natural variety of asphalt found in parts of Utah and western Colorado.
A black, coal-like substance obtained from mines and used in the manufacture of black asphaltum varnish.
Natural black lustrous asphalt found in the Uinta Mountains in Utah and also known as uintaite. It is used as a carbonaceous addition to foundry sands.
Trademark of the pure asphalt, which is used in making paint.
Gilsonite® since 1921 is the federally registered trademark of the American Gilsonite Company for a form of natural asphalt found in large amounts only in the Uintah Basin of Utah; the non-trademarked mineral name is uintahite or uintaite. It is mined in underground shafts and resembles shiny black obsidian. Discovered in the 1860s, it was first marketed as a lacquer, electrical insulator and waterproofing compound about twenty-five years later by Samuel H.
