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