Know all about Trachyandesite and Lamprophyre properties here. All properties of rocks are important as they define the type of rock and its application. Trachyandesite and Lamprophyre belong to Igneous Rocks.Texture of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Lamprophyre is Porphyritic. Trachyandesite appears Dull and Soft and Lamprophyre appears Dull, Banded and Foilated. The luster of Trachyandesite is earthy while that of Lamprophyre is subvitreous to dull. Trachyandesite 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 Trachyandesite are creating artwork, pottery 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).