grahamite

[ grey-uh-mahyt ]

/ ˈgreɪ əˌmaɪt /

an asphaltite with a pitch-black luster.

Origin of grahamite

1865–70, Americanism; named after J. A. and J. L. Graham, 19th-century American mineowners; see -ite¹

Grahamite and glance-pitch are common, and are exported for use in varnish and paint manufactures.

Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 |Various
The hungry Grahamite accepted, and at an early moment found himself at the doctors board.

The Funny Side of Physic |A. D. Crabtre
Precisely the same may be said of the Grahamite of West Virginia.

Scientific American Supplement, No. 362, December 9, 1882 |Various
The Grahamite fills the open fissure in the sandstone, and was plainly introduced when in a liquid state.

Scientific American Supplement, No. 362, December 9, 1882 |Various

The oldest of our party was "Aunty True," one of the real folks, and a confirmed Grahamite.

St. Nicholas Magazine for Boys and Girls, Vol. V, August, 1878, No 10. |Various