metamorphic
Serpentine
Antigorite/Lizardite (Mg,Fe)3Si2O5(OH)4
AI-generated identification · may be incorrectHardness: 3-6 (Mohs), Color: olive green to yellowish-green with dark veins, Luster: waxy to greasy, Crystal structure: monoclinic, specific gravity: 2.5-2.6
Identified More metamorphic →
Explore Serpentine in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 3-6 (Mohs), Color: olive green to yellowish-green with dark veins, Luster: waxy to greasy, Crystal structure: monoclinic, specific gravity: 2.5-2.6
Formation & geological history
Formed through the hydrothermal alteration of ultramafic rocks (serpentinization) in the oceanic crust and mantle, common at tectonic plate boundaries.
Uses & applications
Used for carvings, decorative architecture, gemstones (jewelry), and historically as a source of asbestos in some varieties.
Geological facts
Named for its resemblance to the skin of a serpent; it is the official state rock of California and has a unique slippery feel when touched.
Field identification & locations
Identified by its distinctive green color, waxy luster, and dark veining. Found in mountain belts like the Appalacians, Rockies, and the Alps.
More like this
Other metamorphic specimens
Nephrite Jade
Nephrite
Mineral/Rock
Amphibolite
Amphibolite
metamorphic
Rhodonite
Manganese Silicate (Mn, Fe, Mg, Ca)SiO3
mineral
Rhodonite
(Mn,Fe,Mg,Ca)SiO3
mineral
Greenschist
Greenschist (containing Chlorite, Actinolite, and Epidote)
metamorphic
Garnet
Garnet group: X3Y2(SiO4)3 (commonly Almandine-Pyrope series)
mineral