Know all about Siltstone and Essexite properties here. All properties of rocks are important as they define the type of rock and its application. Siltstone belongs to Sedimentary Rocks while Essexite belongs to Igneous Rocks.Texture of Siltstone is Clastic whereas that of Essexite is Granular. Siltstone appears Rough and Essexite appears Banded. The luster of Siltstone is dull while that of Essexite is not available. Siltstone is available in brown, red, reddish brown colors whereas Essexite is available in dark grey to black colors. The commercial uses of Siltstone are raw material for the manufacture of mortar, soil conditioner and that of Essexite are cemetery markers, commemorative tablets, jewelry, sea defence, tombstones.