metamorphic
Serpentine
Serpentine group (Mg,Fe)3Si2O5(OH)4
AI-generated identification · may be incorrectHardness of 3-5 on the Mohs scale, typically olive green to brownish-green, greasy to waxy luster, monoclinic crystal system.
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Physical properties
Hardness of 3-5 on the Mohs scale, typically olive green to brownish-green, greasy to waxy luster, monoclinic crystal system.
Formation & geological history
Formed via serpentinization, a metamorphic process altering ultramafic rocks from the Earth's mantle in the presence of water at elevated temperatures.
Uses & applications
Used in ornamental carvings, architectural stone, asbestos manufacturing historically, and as a tumbling stone for jewelry.
Geological facts
Serpentine is the state rock of California and is frequently used as a substitute for jade.
Field identification & locations
Identified by its characteristic green mottled color, soft waxy feel, and lack of cleavage; found worldwide in ophiolite belts.
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