schist
A medium-grade metamorphic rock with a foliated structure, often containing mica. Technical term used in geology.
See also: 結晶片岩
The geology of this area consists mainly of schist.
Crystalline schist is a type of metamorphic rock.
crystalline schist
hornblende schist
micaceous schist
Compound of 片 (へん, 'piece, flake') and 岩 (がん, 'rock'), referring to the flaky or foliated structure characteristic of schist.