bn:00063635n
Noun Concept
Categories: Porphyritic rocks, Articles with short description, Sculpture materials, Volcanic rocks, Stone
EN
porphyry  porphyritic rock  Imperial Porphyry  granite porphyry  Igneous rock porphyry
rock
geology
texture
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EN
Porphyry is a textural term for an igneous rock consisting of coarse-grained crystals such as feldspar or quartz dispersed in a fine-grained silicate-rich, generally aphanitic matrix or groundmass. Wikipedia
An igneous rock with large crystals in a fine-grained matrix, or associated mineral deposit Wikipedia Disambiguation
Variety of igneous rock Wikidata
A hard igneous rock consisting of large crystals in a fine-grained matrix. Wiktionary
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