metamorphic
Likely greenish serpentine or soapstone fragment
Serpentine-group minerals, commonly antigorite/lizardite; possibly talc-rich steatite
AI-generated identification · may be incorrectThe image shows an opaque, pale green-gray, rounded specimen with a dull to slightly waxy luster and no visible crystal faces. Serpentine has Mohs hardness about 2.5–4 and specific gravity 2.5–2.6; steatite is softer, about 1–2.5, and feels notably soapy.
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Physical properties
The image shows an opaque, pale green-gray, rounded specimen with a dull to slightly waxy luster and no visible crystal faces. Serpentine has Mohs hardness about 2.5–4 and specific gravity 2.5–2.6; steatite is softer, about 1–2.5, and feels notably soapy.
Formation & geological history
Serpentine forms when ultramafic rocks such as peridotite are hydrated during metamorphism; steatite forms by intense alteration of magnesium-rich rocks. A precise geological age cannot be determined visually.
Uses & applications
Used as ornamental stone, carvings, beads, and sometimes heat-resistant or electrical-insulating material; steatite is also used industrially. This low-detail specimen would generally have modest collector value.
Geological facts
Green coloration commonly comes from iron-bearing serpentine minerals, while darker veins may indicate magnetite or remnant ultramafic material. The image is too blurred for a secure species-level identification.
Field identification & locations
Test hardness against a copper coin or steel nail, check for a greasy/soapy feel, and inspect for fibrous or mottled green texture. Serpentinized ultramafic rocks are plausible in the broad Mumbai–Western Ghats region, though local provenance cannot be confirmed.
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