metamorphic
Serpentine
Serpentine subgroup (Mg,Fe)3Si2O5(OH)4
AI-generated identification · may be incorrectHardness of 3-5 on the Mohs scale, typically olive-green to yellowish-green color, greasy to waxy luster, and monoclinic crystal system with no true cleavage.
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Physical properties
Hardness of 3-5 on the Mohs scale, typically olive-green to yellowish-green color, greasy to waxy luster, and monoclinic crystal system with no true cleavage.
Formation & geological history
Formed through the hydrothermal alteration of ultramafic rocks like peridotite from Earth's mantle, a process known as serpentinization.
Uses & applications
Used as an architectural stone, decorative carving material, and historically for asbestos insulation.
Geological facts
Serpentine is the official state rock of California and often serves as a host rock for valuable mineral deposits like asbestos and jade.
Field identification & locations
Identify in the field by its distinct greenish, slick, or waxy appearance and softness that allows it to be scratched easily by a knife.
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