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