Young Earth Scientists' Society - SCHIST Schists are medium to coarse-grained metamorphic rocks in which platy minerals are dominant. It commonly includes mica minerals such as muscovite and biotite which display parallel
![File:Staurolite-garnet-mica schist (Mt. Rushmore quadrangle, Black Hills, South Dakota, USA) (27022880317).jpg - Wikimedia Commons File:Staurolite-garnet-mica schist (Mt. Rushmore quadrangle, Black Hills, South Dakota, USA) (27022880317).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/6/6e/Staurolite-garnet-mica_schist_%28Mt._Rushmore_quadrangle%2C_Black_Hills%2C_South_Dakota%2C_USA%29_%2827022880317%29.jpg)
File:Staurolite-garnet-mica schist (Mt. Rushmore quadrangle, Black Hills, South Dakota, USA) (27022880317).jpg - Wikimedia Commons
![File:Staurolite mica schist (Charlestown, Sullivan County, New Hampshire, USA) (41334396675).jpg - Wikimedia Commons File:Staurolite mica schist (Charlestown, Sullivan County, New Hampshire, USA) (41334396675).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/2/2f/Staurolite_mica_schist_%28Charlestown%2C_Sullivan_County%2C_New_Hampshire%2C_USA%29_%2841334396675%29.jpg)