metamorphic
Serpentine
(Mg,Fe)3Si2O5(OH)4
AI-generated identification · may be incorrectHardness of 2.5 to 5.5 on the Mohs scale, typically mottled green to yellowish-green color, greasy or waxy luster, and monoclinic crystal system.
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Physical properties
Hardness of 2.5 to 5.5 on the Mohs scale, typically mottled green to yellowish-green color, greasy or waxy luster, and monoclinic crystal system.
Formation & geological history
Formed through the serpentinization of ultramafic rocks like peridotite during hydrothermal metamorphism in ocean floor environments.
Uses & applications
Used as an ornamental stone, for carving, in asbestos manufacturing historically, and as a decorative aggregate.
Geological facts
Serpentine is the state rock of California and often contains chrysotile asbestos fibers.
Field identification & locations
Identify by its characteristic slippery feel, soft hardness, and various shades of green often veined with white or brown.
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