Porphyry (/ ˈpɔːrfəri / POR-fə-ree) is any of various granites or igneous rocks with coarse-grained crystals such as feldspar or quartz dispersed in a fine-grained silicate -rich, generally aphanitic …

Nov 5, 2012 · Porphyry is an igneous rock with large crystals in a fine groundmass. Discover how these textures develop and where porphyritic rocks form.

Sep 2, 2022 · Porphyry is a textural term that describes any intrusive or extrusive igneous rock with consistently larger crystals set in a finer-grained matrix. Metamorphic rocks showing such …

Porphyry is a variety of igneous rock consisting of large-grained crystals, such as feldspar or quartz, dispersed in a fine-grained feldspathic [1] matrix or groundmass.

A porphyry is an igneous rock that contains large crystals (phenocrysts) in a finer-grained groundmass.

(A porphyry is an igneous rock containing conspicuous crystals, called phenocrysts, surrounded by a matrix of finer-grained minerals or glass or both.) In most rocks, both alkali and …

The meaning of PORPHYRY is a rock consisting of feldspar crystals embedded in a compact dark red or purple groundmass.

Feb 18, 2005 · Porphyry wrote in just about every branch of learning practiced at the time but only a portion of his large output is extant. Porphyry was an influential thinker. He applied …

Jun 24, 2005 · DESCRIPTION: Porphyry is the term geologists apply to igneous rocks that consist of relatively large grains or crystals, called phenocrysts, surrounded by a finer grained …

May 8, 2024 · Porphyry refers to igneous rocks with large, well-formed crystals in a finer-grained matrix common in andesite, basalt, rhyolite, or granite.