Know all about Gossan and Lamprophyre properties here. All properties of rocks are important as they define the type of rock and its application. Gossan belongs to Metamorphic Rocks while Lamprophyre belongs to Igneous Rocks.Texture of Gossan is Rough, Sandy whereas that of Lamprophyre is Porphyritic. Gossan appears Dull and Banded and Lamprophyre appears Dull, Banded and Foilated. The luster of Gossan is metallic while that of Lamprophyre is subvitreous to dull. Gossan is available in brown, brown- black, gold, green, rust colors whereas Lamprophyre is available in black, bluish - grey, brown, dark greenish - grey, green, grey colors. The commercial uses of Gossan are cemetery markers, commemorative tablets, gemstone and that of Lamprophyre are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo).