metamorphic

Weathered mica-rich schist

Mica schist, likely muscovite–quartz schist

AI-generated identification · may be incorrect

Gray-beige, coarse and foliated, with visible silvery mica flakes and quartz; mica has Mohs hardness 2–3, quartz 7. The specimen’s uneven surface and lighting make precise mineral identification uncertain.

Identified October 13, 2026More metamorphic →

Explore Weathered mica-rich schist in the encyclopedia →

Identify your own rocks.

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

App Store Google Play

Physical properties

Formation & geological history

Formed when clay-rich sedimentary rock was buried and metamorphosed, aligning mica into foliation; its age and exact formation setting cannot be determined from the image.

Uses & applications

Schist is used as decorative or landscaping stone and, when suitable, building stone; mica has industrial uses, while attractive pieces may be collected.

Geological facts

The sparkly, flaky appearance commonly comes from mica crystals aligned during metamorphism.

Field identification & locations

Look for thin, parallel layers and reflective flakes that split along foliation; schists occur in metamorphic mountain belts worldwide. A loose, hand-sized common specimen typically sells for about $2–$20 USD.