any of several naturally occurring, hard, solid bitumens whose chief constituents, asphaltenes, have very large molecules. Asphaltites are dark brown ... [1 related articles] Found on http://www.britannica.com/eb/a-z/a/113
A group name for the organic compounds abertite, anthraxolite, grahamite, impsonite, nigrate and uintaite.
Found on https://www.encyclo.co.uk/local/20501