Characteristics related to grain size of rocks are called as texture. Here you can know more about texture of Porphyry and Phonolite. Texture of Porphyry is Porphyritic whereas that of Phonolite is Granular. Based on the texture of rocks, they are used for various purposes. Get detailed information about Porphyry vs Phonolite texture, color, appearance and maintenance in the next section.
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