Schist is a metamorphic rock form characterized by strong foliation so that it is readily split into thin flakes or slabs.
|Schist||Foliated||Shale, granitic and volcanic rocks||Coarse-grained micaceous minerals|
This example of schist is from Warm Springs, Georgia where a stressed formation produces it along with quartzite and gneiss, two other metamorphic rocks. The formation produces a large warm spring.
Lutgens and Tarbuck