metamorphic
Pale green stone, possibly serpentine
Serpentinite (dominantly serpentine-group minerals; visual identification is uncertain)
AI-generated identification · may be incorrectOpaque, pale green to yellow-green, with a dull to waxy luster and smooth, rounded surface. Serpentine minerals have Mohs hardness about 2.5–5.5 and a fine-grained, commonly massive structure; hardness and cleavage cannot be determined from the image.
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Physical properties
Opaque, pale green to yellow-green, with a dull to waxy luster and smooth, rounded surface. Serpentine minerals have Mohs hardness about 2.5–5.5 and a fine-grained, commonly massive structure; hardness and cleavage cannot be determined from the image.
Formation & geological history
Serpentinite forms when ultramafic rocks are altered by water-rich fluids, commonly in oceanic crust and along tectonic plate boundaries. The specimen’s age and exact origin cannot be determined from its appearance alone.
Uses & applications
Serpentine is used as decorative and carving stone, ornamental aggregate, and, when attractive, in jewelry and collections.
Geological facts
Serpentine is a mineral group rather than a single mineral; its color and texture vary widely.
Field identification & locations
The rounded shape suggests natural water wear, but the image does not show diagnostic features to confirm serpentine. Serpentinite occurs in many mountain belts and ophiolite zones; a hardness or streak test and closer inspection would help identify it.
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