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grahamite

American  
[grey-uh-mahyt] / ˈgreɪ əˌmaɪt /

noun

Mineralogy.
  1. an asphaltite with a pitch-black luster.


Etymology

Origin of grahamite

1865–70, named after J. A. and J. L. Graham, 19th-century American mineowners; see -ite 1

Example Sentences

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Asphalts and bitumens include a wide variety of hydrocarbon materials, such as gilsonite, grahamite, elaterite, ozokerite, etc., which are used for somewhat different purposes.

From The Economic Aspect of Geology by C. K. (Charles Kenneth) Leith

This series of substances includes natural or rock-gas, petroleum, maltha or semifluid hydrocarbon, and solid hydrocarbons, such as asphaltum, albertite, grahamite, 339 ozokerite, etc.

From North America by Israel C. (Cook) Russell

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