Know all about Siltstone and Jasperoid properties here. All properties of rocks are important as they define the type of rock and its application. Siltstone and Jasperoid belong to Sedimentary Rocks.Texture of Siltstone is Clastic whereas that of Jasperoid is Earthy. Siltstone appears Rough and Jasperoid appears Glassy or Pearly. The luster of Siltstone is dull while that of Jasperoid is vitreous and pearly. Siltstone is available in brown, red, reddish brown colors whereas Jasperoid is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Siltstone are raw material for the manufacture of mortar, soil conditioner and that of Jasperoid are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo).