metamorphic
Serpentine
Serpentine subgroup (Mg,Fe)3Si2O5(OH)4
AI-generated identification · may be incorrectHardness of 3-5 on the Mohs scale, typically mottled green to yellowish-black with a greasy or waxy luster, and a monoclinic crystal system.
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 of 3-5 on the Mohs scale, typically mottled green to yellowish-black with a greasy or waxy luster, and a monoclinic crystal system.
Formation & geological history
Formed through the hydrothermal alteration of ultramafic rocks from the Earth's mantle, a process called serpentinization typically occurring in tectonic plate subduction zones.
Uses & applications
Used widely as a decorative stone, for carving, in asbestos manufacturing historically, and as an architectural aggregate.
Geological facts
Serpentine is the state rock of California and often serves as a host rock for valuable mineral deposits like asbestos, talc, and sometimes jade or precious metals.
Field identification & locations
Identified easily by its distinctive mottled green color, soft greasy feel, and lack of distinct cleavage; found globally in ophiolite belts.
More like this
