graphic granite

American  

noun

1. a pegmatite that has crystals of gray quartz imbedded in white or pink microcline in such a manner that they resemble cuneiform writing.

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Etymology

Origin of graphic granite

First recorded in 1830–40

Example Sentences

See Examples For:

graphic granite

The chief matrix of the beryl all over the world is graphic granite, but it may occur in other rocks.

From Lippincott's Magazine of Popular Literature and Science Volume 11, No. 27, June, 1873 by Various

The various attempts made to unriddle the real history of graphic granite are, however, scarce less curious than the speculations connected with what may be termed its romance.

From The Cruise of the Betsey or, A Summer Ramble Among the Fossiliferous Deposits of the Hebrides. With Rambles of a Geologist or, Ten Thousand Miles Over the Fossiliferous Deposits of Scotland by Symonds, W. S. (William Samuel)

The variety of granite called by the French Pegmatite, which is a mixture of quartz and common feldspar, usually with some small admixture of white silvery mica, often passes into graphic granite.

From The Student's Elements of Geology by Lyell, Charles, Sir