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