metamorphic

Greenish metamorphic rock (possibly chlorite schist)

Chlorite-rich schist; exact identification is uncertain from the image

AI-generated identification · may be incorrect

Dull, olive-green to gray, with a foliated or flaky appearance and scattered pale mineral patches. Chlorite has Mohs hardness 2–2.5; schist hardness varies with its mineral mix. Crystal structure and specific gravity cannot be determined reliably from the image.

Identified September 25, 2026More metamorphic →

Explore Greenish metamorphic rock (possibly chlorite 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

Likely formed when pre-existing rock was altered by heat, pressure, and fluid activity, producing chlorite-rich metamorphic fabric. Its age and original rock type cannot be established visually.

Uses & applications

Schist is used as decorative stone, landscaping material, and sometimes building stone; this specimen appears more suited to collecting than industrial use.

Geological facts

The green color may come from chlorite, but other minerals can produce similar hues. A fresh surface and examination of its foliation and mineral grains would help confirm the identification.

Field identification & locations

Look for aligned, platy grains and a tendency to split along foliation; chlorite may leave a greenish streak. Chlorite schists occur in metamorphic belts worldwide.