Know all about Variolite and Lamprophyre properties here. All properties of rocks are important as they define the type of rock and its application. Variolite and Lamprophyre belong to Igneous Rocks.Texture of Variolite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Lamprophyre is Porphyritic. Variolite appears Dull and Soft and Lamprophyre appears Dull, Banded and Foilated. The luster of Variolite is not available while that of Lamprophyre is subvitreous to dull. Variolite is available in black, brown, light to dark grey colors whereas Lamprophyre is available in black, bluish - grey, brown, dark greenish - grey, green, grey colors. The commercial uses of Variolite are cemetery markers, creating artwork 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).