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impsonite

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Wiktionary英語版

出典:Wiktionary

impsonite

出典:『Wiktionary』 (2015/08/29 04:59 UTC 版)

語源

Impson +‎ -ite, after a sample from the Impson Valley (later reclassified as grahamite); coined by George Homans Eldridge in 1901.

ウィキペディア英語版

出典:Wikipedia

Impsonite

出典:『Wikipedia』 (2011/02/16 20:55 UTC 版)

英語による解説

ウィキペディア英語版からの引用
引用

Impsonite is a black, carbonaceous substance, with a specific gravity of 1.10–1.25 and a carbon content of 5085%. It is described as an asphaltic pyrobitumen. It is believed to be 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 (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

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