Pyrobitumen

Also known as
  • Anthraxolit
  • Anthraxolite
  • Grahamite
  • +1 more

Where it forms, where it's found

Geological setting

Ancient sedimentary rocks, and remobilized in hydrothermal ore deposits. Also frequent as inclusions in quartz crystals, especially those of the "herkimer-type" from dolomitized rocks.

150recorded occurrences
Source · OpenStreetMap

Varieties

Physical

Colour
black

Crystallography

Crystal system
Amorphous

Synonyms

  • Anthraxolit
  • Anthraxolite
  • Grahamite
  • Pirobitumen

Group, growth & confusion

Often grow together
4 minerals

Literature, links & citation

Citations
  1. 1908Lohest, M. (1908) Note sur quelques échantillons d'anthracite. Annales de la Société géologique de Belgique, 36, 129.
  2. 1954Dunn, J., Fisher, D. (1954) Occurrence, properties and paragenesis of anthraxolite in the Mohawk Valley. American Journal of Science, 252.
  3. 1964Mueller, G. (1964) Report of the Twenty-Second Session India 1964. International Geological Congress, 1. [article name not recorded]. 46
  4. 1976Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
  5. 1988Parnell, John (1988) Native platinum in pyrobitumen from Fonda, New York. American Mineralogist, 73 (9-10) 1170-1171
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Pyrobitumen — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/pyrobitumen-35845},
  note      = {Accessed 2026-05-11}
}