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