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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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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 Leith, C. K. (Charles Kenneth)

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 Russell, Israel C. (Cook)