Porphyritic Andesite
March 15, 2025
Porphyritic andesite (Kate Peak Formation, Middle Miocene;… | Flickr 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