metamorphic
Serpentine
(Mg,Fe)3Si2O5(OH)4
AI-generated identification · may be incorrectHardness of 3-5 on the Mohs scale, typically dark green with mottled light patterns, waxy to greasy luster, and monoclinic crystal system.
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Physical properties
Hardness of 3-5 on the Mohs scale, typically dark green with mottled light patterns, waxy to greasy luster, and monoclinic crystal system.
Formation & geological history
Forms through the hydrothermal metamorphism of ultramafic rocks from the Earth's mantle, commonly occurring in subduction zones.
Uses & applications
Used for ornamental carvings, decorative architectural stone, and as a historical source of asbestos fibers.
Geological facts
Serpentine is the official state rock of California and often serves as a host rock for valuable mineral deposits like jade and asbestos.
Field identification & locations
Easily identified by its characteristic green mottled coloration and soft, greasy feel. Common in ophiolite belts worldwide.
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