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Gneiss

Gneiss is a foliated metamorphic rock identified by its bands and is common and widely distributed type of metamorphic rock. It is formed by high-temperature and high-pressure metamorphic processes acting on formations composed of igneous or sedimentary rocks.

Colors It Comes In - White, Gray, Pink, Black, and Red

Fracture Pattern - Shear sliding

Shape - Variety of shapes and sizes

Luster - Shiny, Sparkly

Texture - Coarse-Grained, Interlocking

Where It Can Be Found - Commonly found in the cores of mountain ranges and in Precambrian crystalline terranes.

Hardness On The Mohs Scale - 6 To 7 Out Of 10

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