Know all about Argillite and Jasperoid properties here. All properties of rocks are important as they define the type of rock and its application. Argillite and Jasperoid belong to Sedimentary Rocks.Texture of Argillite is Clastic, Polished whereas that of Jasperoid is Earthy. Argillite appears Rough and Dull and Jasperoid appears Glassy or Pearly. The luster of Argillite is waxy and dull while that of Jasperoid is vitreous and pearly. Argillite is available in dark grey to black, pink, red, white colors whereas Jasperoid is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Argillite are fire resistant, used to manufracture paperweights and bookends 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).