metamorphic

Greenish-gray rock fragment, likely serpentine-rich stone

Possibly serpentinite (serpentine-group minerals; identification is uncertain from the image)

AI-generated identification · may be incorrect

Dull, pale green-gray, fine-grained and irregularly fractured; likely Mohs 2.5–5.5 depending on mineral mix. Crystal structure and composition cannot be confirmed visually.

Identified September 28, 2026More metamorphic →

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Physical properties

Dull, pale green-gray, fine-grained and irregularly fractured; likely Mohs 2.5–5.5 depending on mineral mix. Crystal structure and composition cannot be confirmed visually.

Formation & geological history

If serpentinite, it formed when water altered ultramafic rocks during metamorphism; such rocks range from ancient to geologically recent.

Uses & applications

Serpentinite is sometimes used as decorative stone, carving material, or a source of industrial minerals; this small fragment has no apparent commercial use.

Geological facts

Color alone is not diagnostic, and several common rocks can look similar in a photograph.

Field identification & locations

A field identification would require tests such as hardness, streak, and close inspection of texture; professional testing may be needed to distinguish serpentinite from other green rocks.