Grahamite, also known as Pyrobitumen or Anthraxolite,[1] is a bitumen-impregnated rock (asphaltite). It is a naturally occurring solid hydrocarbon bitumen with a relatively high fixed carbon rate of 35–55% and high temperature of fusion.[3] It occurs in Cuba, Mexico, and in West Virginia and Oklahoma, United States. Grahamite found in the Impson Valley of southeastern Oklahoma is known as impsonite.
| Grahamite | |
|---|---|
| General | |
| Category | Organic mineral |
| Crystal system | Amorphous |
| Identification | |
| Color | Black |
| References | [1][2] |
Grahamite was named by Henry Wurtz after James Lorimer Graham, who was interested in commercial development of this mineral in West Virginia.[4]
References
edit- ^ a b Mindat with location data
- ^ Mineralienatlas
- ^ Speight, James G. (2014). The Chemistry and Technology of Petroleum (5 ed.). CRC Press. p. 19. ISBN 9781439873892.
- ^ Richardson, Clifford (1910). "Grahamite, a solid native bitumen" (PDF). Journal of the American Chemical Society. 32 (9): 1032–1049. doi:10.1021/ja01927a003.
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