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 Mangerite Uses. We have provided you with all information about Mangerite rock here. Mangerite is a plutonic intrusive igneous rock, which is essentially a hypersthene-bearing monzonite. Mangerite is available in black, brown, light to dark grey, white colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Mangerite is white. Get to know more about Mangerite rock and characteristics of Mangerite rock in the next sections.