Schist (noun)

A type of metamorphic rock characterized by parallel alignment of flat or elongate mineral grains, or by a preferred orientation of microcrystalline fibers.

Origin:

Early 18th century: via french from german schiefer "slate", from schief "slanting".

Examples:

1. Schist is a type of metamorphic rock that is formed from the alteration of shale.
2. Schist is a common rock type that is used for building and construction.
3. The rock is composed mainly of mica, quartz, and feldspar, which gives it a distinct appearance.
4. Schist is typically found in areas where there has been a lot of tectonic activity.
5. Schist is a type of rock that is often split into thin layers, making it useful for building and construction.