Porphyritic Andesite
Nov. 29, 2024
Porphyritic Andesite | Geology 1501 | ECU Uses and How Porphyritic Andesite Rock Form | Science Drill Porphyritic andesite (Boulder County, Colorado, USA) | Flickr Porphyritic andesite, showing white phenocrysts of plagioclase and dark phenocrysts of amphibole | Geology rocks, Rocks and minerals, Rock collection Andesite: Igneous Rock - Pictures, Definition & More Andesite is a volcanic rock of intermediate composition. This sample has porphyritic texture with large crystals of plagioclase. This sample comes to Stock Photo - Alamy | Porphyritic Andesite
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