Know all about Gossan and Jasperoid properties here. All properties of rocks are important as they define the type of rock and its application. Gossan belongs to Metamorphic Rocks while Jasperoid belongs to Sedimentary Rocks.Texture of Gossan is Rough, Sandy whereas that of Jasperoid is Earthy. Gossan appears Dull and Banded and Jasperoid appears Glassy or Pearly. The luster of Gossan is metallic while that of Jasperoid is vitreous and pearly. Gossan is available in brown, brown- black, gold, green, rust colors whereas Jasperoid is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Gossan are cemetery markers, commemorative tablets, gemstone 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).