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 Gneiss Uses. We have provided you with all information about Gneiss rock here. Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. Gneiss is available in black, brown, pink, 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 Gneiss is white. Get to know more about Gneiss rock and characteristics of Gneiss rock in the next sections.
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