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A fine-grained granite porphyry having a groundmass with irregular intergrowths of quartz and feldspar.

[German Granophyr : grano-, grano- + (Por)phyr, porphyry (from Medieval Latin porphyrium; see porphyry).]

gran′o·phyr′ic (-fîr′ĭk) adj.


(Geological Science) a fine-grained granitic rock in which irregular crystals of intergrown quartz and feldspar are embedded in a groundmass of these minerals
[C19: from gran(ite) + -phyre after porphyry]
granophyric adj


(ˈgræn əˌfaɪər)

a porphyritic granitic rock with a micrographic intergrowth of the minerals of the groundmass.
[1880–85; grano- + French (por)phyre porphyry]
gran`o•phy′ric (-ˈfɪr ɪk) adj.
References in periodicals archive ?
Quartz and alkali feldspar are locally intergrown in a granophyric texture within a mosaic of polygonal, equigranular crystals of quartz and alkali feldspar.
The granite displays medium-grained, hypidiomorphic to, less commonly, allotriomorphic, subequigranular to equigranular, and sparingly granophyric fabric.
The rock compounds of the area include: granite, granodiorite, monzonite and diorite with identified granular, porphyritic and granophyric texture in microscopic thin section.
The initial mapping conducted late 2010 and early 2011 on Treasure Island identified a granophyric horizon in a dolerite/gabbro package of rocks, which indicated an environment with the right rock types, similar to that found further north in the belt at Kambalda and Kalgoorlie.
It is composed by strongly fractured granophyric rocks, cross-cut by sub-vertical basic and acidic/felsic dykes with structural trend N65[degrees] and EW respectively.
A primary three-phase fluid inclusion assemblage contained within growth-zoned quartz crystals in the granophyric phase of the Nipissing diabase was chosen as representative of the highest temperature fluids responsible for ore deposition at Cobalt.
The groundmass is granophyric, partly spherulitic, and contains miarolitic cavities.
The Redstone Mountain Granite comprises at least two phases, including pink to red, medium-grained, equigranular to subporphyritic biotite-amphibole granite containing sparse quartz phenocrysts and white plagioclase phenocrysts set in a fine-grained granophyric groundmass (Fig.
It is medium-grained and hypidiomorphic but locally granophyric.
Patches of fine-grained granophyric feldspar and quartz in central areas of the dyke usually show elongated needles of apatite.