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