mineral

Likely epidote-bearing rock or weathered chalcopyrite specimen

Epidote-group mineral, possibly with chalcopyrite; identification uncertain from image

AI-generated identification · may be incorrect

Small, rough yellow-green to brown specimen with earthy-to-glassy luster and granular texture. Epidote has Mohs hardness 6–7, monoclinic crystals, and poor cleavage; chalcopyrite is softer (3.5–4), brassy yellow, and often tarnishes iridescently.

Identified August 25, 2026More mineral →

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At a glance

Common name: Likely epidote-bearing rock or weathered chalcopyrite specimen
Scientific name: Epidote-group mineral, possibly with chalcopyrite; identification uncertain from image
Category: mineral
Identified: August 25, 2026
Method: Standard

AI Estimated Value

Approximately $1–$10 as an unidentified common specimen; $10–$50 if confirmed as attractive, locality-labeled epidote or chalcopyrite.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Epidote commonly forms in metamorphosed mafic rocks, hydrothermal veins, and contact zones; chalcopyrite forms in hydrothermal copper sulfide deposits. Exact age and locality cannot be determined photographically.

Uses & applications

Epidote is mainly a collector mineral and metamorphic indicator; chalcopyrite is an important copper ore. This small rough piece has little commercial value unless locality or crystal quality is notable.

Geological facts

The olive-green/yellow coloration and granular appearance are compatible with epidote, but lighting and image resolution prevent confident separation from altered sulfides or yellow-green matrix minerals.

Field identification & locations

Check streak, hardness, density, and magnetism: epidote scratches glass and leaves a pale gray streak; chalcopyrite is easily scratched with steel and may show metallic brassy faces. Common sources include Austria, Pakistan, Mexico, Peru, and U.S. metamorphic belts.