metamorphic
Serpentine
Serpentine group (Mg3Si2O5(OH)4)
AI-generated identification · may be incorrectHardness 3-5 on Mohs scale, waxy or greasy luster, olive to yellow-green color, and monoclinic crystal system with poor cleavage.
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Physical properties
Hardness 3-5 on Mohs scale, waxy or greasy luster, olive to yellow-green color, and monoclinic crystal system with poor cleavage.
Formation & geological history
Formed through the hydrothermal alteration of ultramafic rocks like peridotite from the Earth's mantle, typically in subduction zone environments.
Uses & applications
Used in ornamental carvings, architectural stone, asbestos manufacturing historically, and as a popular specimen for rock collectors.
Geological facts
Serpentine is the official state rock of California and often hosts unique flora adapted to serpentine soils.
Field identification & locations
Easily identified in the field by its distinct green color, soft greasy feel, and slippery fracture surface. Found worldwide in ophiolite belts.
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