impsonite
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English
[edit]
Etymology
[edit]Impson + -ite, after a sample from the Impson Valley (later reclassified as grahamite); coined by George Homans Eldridge in 1901.
Noun
[edit]impsonite (countable and uncountable, plural impsonites)
- A black carbonaceous substance, believed to be derived from a fluid bitumen which polymerized after filling a vein.