mineral

Metallic sulfide ore, possibly pyrite-rich

Pyrite (FeS₂), potentially mixed with chalcopyrite, galena, or iron oxides

AI-generated identification · may be incorrect

Dark bronze to brassy metallic luster with irregular, botryoidal-to-granular masses; pyrite hardness 6–6.5, cubic crystal system, no prominent cleavage, specific gravity about 5.0. The image alone cannot confirm mineral identity because the specimen is heavily weathered and lacks diagnostic crystal faces.

Identified September 4, 2026More mineral →

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At a glance

Common name: Metallic sulfide ore, possibly pyrite-rich
Scientific name: Pyrite (FeS₂), potentially mixed with chalcopyrite, galena, or iron oxides
Category: mineral
Identified: September 4, 2026
Method: Standard

AI Estimated Value

Approximately $5–$30 as an ordinary rough specimen; potentially $50–$200+ if it contains attractive crystals or economically valuable associated minerals.

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

Likely formed in hydrothermal veins or sulfide-rich sedimentary deposits when hot, sulfur-bearing fluids precipitated metal sulfides; ages range from ancient to relatively young depending on deposit. Surface oxidation can produce brown iron-oxide coatings.

Uses & applications

Pyrite is used chiefly as a sulfur source and collectible mineral; associated sulfide ores may supply copper, lead, zinc, or precious metals. Rough specimens commonly sell for about $5–$30, more if crystals or valuable associated minerals are present.

Geological facts

A pale brass streak and sulfurous odor after striking may support pyrite, while a dark streak and much greater softness suggest other sulfides. Avoid prolonged skin contact or indoor storage if acid-generating sulfides are suspected.

Field identification & locations

Common localities include Peru, Spain, Italy, China, and many hydrothermal mining districts worldwide; testing streak, hardness, magnetism, and specific gravity is recommended for reliable identification.