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 Lherzolite Uses. We have provided you with all information about Lherzolite rock here. Lherzolite is a type of ultramafic igneous rock which contains essential olivine and clinopyroxene and orthopyroxene in equal proportions. Lherzolite is available in black, dark greenish - grey, green, pink, purple colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Lherzolite is white. Get to know more about Lherzolite rock and characteristics of Lherzolite rock in the next sections.