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