metamorphic
Serpentinite
Serpentinite (Hydrated magnesium iron silicate)
AI-generated identification · may be incorrectHardness of 3-5 on the Mohs scale, mottled green to brownish-yellow color, greasy to waxy luster, and massive crystal habit.
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Physical properties
Hardness of 3-5 on the Mohs scale, mottled green to brownish-yellow color, greasy to waxy luster, and massive crystal habit.
Formation & geological history
Formed through the metamorphism of ultramafic rocks from the Earth's mantle in the presence of water at convergent plate boundaries.
Uses & applications
Used as an ornamental stone, for carved sculptures, and historically as asbestos insulation.
Geological facts
Serpentinite is the official state rock of California and often hosts interesting mineral veins like chrysotile and jadeite.
Field identification & locations
Identified by its characteristic green mottled appearance, relative softness, and soapy feel; found worldwide in ophiolite sequences.
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