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grahamite

 - 1 dictionary result

gra⋅ham⋅ite

[grey-uh-mahyt]
–noun Mineralogy.
an asphaltite with a pitch-black luster.

Origin:
1865–70, Americanism; named after J. A. and J. L. Graham, 19th-century American mineowners; see -ite 1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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