- Metamorphic rock dominated by fibrous or platy
cleavage and is product of
Source: Leet, L. Don. 1982.
Physical Geology, 6th Edition. Englewood Cliffs, NJ: Prentice-Hall
- A strongly foliated crystalline rock, formed by dynamic metamorphism, that
can be readily split into thin flakes or slabs due to the well developed
parallelism of more than 50% of the minerals present, particularly those
of lamellar or elongate prismatic habit, e.g., mica and hornblende. The
mineral composition is not an essential factor in its definition unless
specif. included in the rock name, e.g., quartz-muscovite schist.
Varieties may also be based on general composition, e.g., calc-silicate
schist, amphibole schist; or on texture, e.g., spotted schist.
See also: magnesian schist;
pelitic schist. CF:
Dictionary of Mining, Mineral, and Related Terms