Granophyre (/ ˈɡrænəfaɪər / GRAN-ə-fire; [1][2] from granite and porphyry) is a subvolcanic rock that contains quartz and alkali feldspar in characteristic angular intergrowths such as those in the accompanying image. The texture is called granophyric.

granophyre, fine-grained igneous rock that is characterized by a porphyritic texture, having large crystals (phenocrysts) that rest in a nonglassy, finely crystalline matrix (groundmass).

A granophyric texture is an intergrowth of quartz and alkali feldspar in an igneous rock that is less well defined than a graphic texture and often is somewhat radiating.

Granophyre is a type of rock that is occasionally present in granitoids, characterized by a fine-grained texture and composed of plagioclase, K-feldspar, quartz, biotite, and minor accessory minerals like magnetite, zircon, and apatite. You might find …

A granophyre is a felsic, holocrystalline, intrusive or extrusive rock in which quartz and feldspar are abundant and intimately intergrown micrographically in a regular or irregular manner. This type of texture is known as granophyric (Fig. 1; Johannsen, 1939).

Granophyric intergrowths occur as mesostasis, groundmass, and megacrysts, and result from relatively rapid simultaneous growth of quartz and alkali feldspar from a melt, vapor, or devitrifying glass.

Granophyres typically are intrusive rocks that crystallized at shallow depths, and many have compositions similar to those of granites. A common occurrence of granophyre is within layered igneous intrusions dominated by rocks with compositions like that of gabbro.

Granophyre is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the …

The meaning of GRANOPHYRE is a porphyritic igneous rock chiefly of feldspar and quartz with granular groundmass.

Granophyre is a type of igneous rock that is formed from the simultaneous eutectic crystallization of alkali feldspar and quartz. It has a granophyric texture, which is characterized by the intergrowth of these two minerals.