Rocks are naturally occurring solids which are composed of minerals & have been used by humans since ages. From Stone Age, rocks are used for various purposes. Also, the metals and minerals found in rock play an important role in our life. Get to know all the Basanite Uses. We have provided you with all information about Basanite rock here. Basanite is a black basaltic rock which mainly contains plagioclase, augite, olivine and nepheline and is formerly used as a touchstone. Basanite is available in black, brown, green, grey, red, white colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Basanite is white. Get to know more about Basanite rock and characteristics of Basanite rock in the next sections.