Impsonite
A variety of 'Pyrobitumen'
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About Impsonite
Colour:
Black
Lustre:
Vitreous, Sub-Metallic, Dull
Impsonite is a black, carbonaceous substance, with a specific gravity of 1.10–1.25 and a carbon content of 50–85%. It is described as an asphaltic pyrobitumen, derived from a fluid bitumen which polymerized after filling a vein. The term was coined by George Homans Eldridge in 1901, referring to the asphaltic material in the Impson Valley in southeastern Oklahoma, later known as the Jumbo mine. The asphaltic material in the Impson Valley was later reclassified as grahamite, based on solubility and chemical similarities with the type grahamite of West Virginia.
Unique Identifiers
Mindat ID:
11115 (as Impsonite)
35845 (as Pyrobitumen)
35845 (as Pyrobitumen)
Long-form identifier:
mindat:1:1:11115:3 (as Impsonite)
mindat:1:1:35845:3 (as Pyrobitumen)
mindat:1:1:35845:3 (as Pyrobitumen)
Similar Names
| Simpsonite | A valid IMA mineral species - grandfathered | Al4Ta3O13(OH) |
Physical Properties of Impsonite
Geological Environment
Geological Setting:
Veins in sedimentary rocks
Other Language Names for Impsonite
Varieties of Impsonite
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Impsonite
mindat.org URL:
https://www.mindat.org/min-11115.html
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References for Impsonite
Reference List:
Localities for Impsonite
Showing 11 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Austria | |
| Der Aufschluß (2006) |
China | |
| [var: Arkosite] Cheng et al. (2022) |
Czech Republic | |
| Havelcová et al. (2020) |
Finland | |
| [var: Arkosite] Guice et al. (2017) |
Germany | |
| ... |
| Andreas Gerstenberg |
| Heckmann et al. (2006) |
| Urbigkeit et al. (1987) |
USA | |
| William E. Ham (1956) |
| - (2005) |
| Ham (1956) +1 other reference |
Kola Peninsula, Murmansk Oblast, Russia