Know all about Mudstone and Siltstone properties here. All properties of rocks are important as they define the type of rock and its application. Mudstone and Siltstone belong to Sedimentary Rocks.Texture of Mudstone is Clastic whereas that of Siltstone is Clastic. Mudstone appears Rough and Dull and Siltstone appears Rough. The luster of Mudstone and Siltstone is dull. Mudstone is available in black, blue, brown, green, grey, orange, red, white, yellow colors whereas Siltstone is available in brown, red, reddish brown colors. The commercial uses of Mudstone are creating artwork, pottery and that of Siltstone are raw material for the manufacture of mortar, soil conditioner.