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