granophyre

American  

[gran-uh-fahy^uhr] / ˈgræn əˌfaɪər /

noun

1. a fine-grained or porphyritic granitic rock with a micrographic intergrowth of the minerals of the groundmass.

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granophyre British  

/ ˌɡrænəʊˈfɪrɪk, ˈɡrænəʊˌfaɪə /

noun

1. a fine-grained granitic rock in which irregular crystals of intergrown quartz and feldspar are embedded in a groundmass of these minerals

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granophyre Scientific  

/ grăn′ə-fīr′ /

1. A fine-grained igneous rock that has large intergrown crystals of quartz and feldspar in the matrix.

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Other Word Forms

• granophyric adjective

Etymology

Origin of granophyre

First recorded in 1880–85; grano- + -phyre

Example Sentences

Such rocks are the granophyre hills of Buttermere and Ennerdale, the microgranite patches on either side of the Vale of St John, and the great mass of Eskdale granite which reaches from Wastwater to the flanks of Black Combe.

From Project Gutenberg

Low, brown boulders and rust-colored piles of super-hard granophyre give no clue to the location of the artistic riches hidden in the scrub beyond the sealed road from Karratha.

From Time Magazine Archive

Another granite area appears on the south side of the road between Brodick and Shiskine, where it is associated with granophyre and quartz-diorite and traverses the volcanic vent of post-Cretaceous or Tertiary age already described.

From Project Gutenberg

Granophyre.—This term, according to Geikie, embraces the greater portion of the acid volcanic rocks of the Inner Hebrides.

From Project Gutenberg

This is the essential distinction between a granite and a quartz-porphyry or a granophyre.

From Project Gutenberg