Schist
Shale is the parent rock. It is made up of clay minerals. Shale can metamorphose into slate, phyllite, schist or gneiss depending on the degree of heat and pressure. Schist has a greater degree of metamorphism than phyllite but less than gneiss. It is classed as a medium-grade metamorphic rock and is associated with regional metamorphism do to mountain building. The crystals in schist are large enough to see with the naked eye. They are flattened and elongated. Schist contains more than 50% platy and elongated minerals. Schist is foliated or layered in appearance. Quartz, micas, and amphiboles are primary minerals in schist. Schist comes from a Greek word meaning "to split" Back to Examples of Metamorphic Rocks
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Schist is a course grained metamorphic rock. 
