metamorphic
Serpentine
Serpentine subgroup (Mg,Fe)3Si2O5(OH)4
AI-generated identification · may be incorrectHardness of 3 to 5 on the Mohs scale, typically mottled green to yellowish-black in color with a greasy or waxy luster.
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Physical properties
Hardness of 3 to 5 on the Mohs scale, typically mottled green to yellowish-black in color with a greasy or waxy luster.
Formation & geological history
Formed through the metamorphism of seabed rocks rich in magnesium and iron via serpentinization at tectonic plate boundaries.
Uses & applications
Used in ornamental carvings, architectural stone, asbestos insulation historically, and as a gemstone.
Geological facts
Serpentine is the state rock of California and often serves as a host rock for valuable mineral deposits like jade and chrysotile.
Field identification & locations
Identify in the field by its characteristic waxy or greasy feel, green coloring, and softness relative to quartz. Found worldwide in ophiolite belts.
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