metamorphic
Serpentine
Serpentine group minerals (Mg3Si2O5(OH)4)
AI-generated identification · may be incorrectHardness of 3-5 on Mohs scale, typically green, yellowish, or mottled, greasy to waxy luster, monoclinic crystal system, and specific gravity around 2.5-2.7.
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Physical properties
Hardness of 3-5 on Mohs scale, typically green, yellowish, or mottled, greasy to waxy luster, monoclinic crystal system, and specific gravity around 2.5-2.7.
Formation & geological history
Formed via serpentinization, a hydrothermal alteration process of ultramafic rocks from the Earth's mantle, commonly occurring in ocean floor or subduction zone settings.
Uses & applications
Used in architecture as decorative facing stone, asbestos production historically, and carving ornamental objects.
Geological facts
Serpentine is California's official state rock, making its presence near 35.4°N, 118.9°W extremely geologically plausible.
Field identification & locations
Identify by its characteristic mottled green color, soft feel, and waxy luster. Common in California coast ranges and foothills.
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