metamorphic

Serpentinite (probable)

Serpentinite, a rock composed chiefly of serpentine-group minerals such as antigorite, lizardite, or chrysotile

AI-generated identification · may be incorrect

Olive-green to brown, mottled, and dull to waxy; typically fine-grained, with Mohs hardness about 3–5. The photo does not reveal enough detail to confirm the mineral assemblage or crystal structure.

Identified October 6, 2026More metamorphic →

Explore Serpentinite (probable) 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

Forms when water alters ultramafic rocks, commonly at ancient seafloor or subduction-zone settings; formation age depends on the source rock and alteration event.

Uses & applications

Used as decorative stone, carvings, and sometimes dimension stone; chrysotile-bearing material has had industrial use but poses serious asbestos hazards.

Geological facts

Serpentinite is a rock rather than a single mineral, and its appearance varies widely with mineral content and weathering.

Field identification & locations

The green, mottled appearance is consistent with serpentinite, but identification from this image alone is uncertain; check for a waxy feel and avoid cutting or grinding unknown specimens because some contain asbestos minerals.