Metamorphic

Schist

AI-generated identification · may be incorrect

Foliated texture with visible mineral grains, often platy or elongated. Color varies depending on mineral composition, often gray, brown, or black.

Identified May 31, 2026More metamorphic →

Explore Schist in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Foliated texture with visible mineral grains, often platy or elongated. Color varies depending on mineral composition, often gray, brown, or black.

Formation & geological history

Formed from regional metamorphism of shale or mudstone under moderate to high temperature and pressure conditions.

Uses & applications

Sometimes used as a building stone or for decorative purposes, though its foliation can make it weak. Not typically used in jewelry.

Geological facts

Schist often contains index minerals like garnet, staurolite, or kyanite, which geologists use to determine the temperature and pressure conditions of its formation.

Field identification & locations

Identified by its strong foliation (schistosity), where mineral grains are aligned in parallel layers. Commonly found in areas of ancient mountain building.