mineral

Metallic sulfide mineral specimen, likely pyrite-bearing ore

Likely pyrite (FeS₂), possibly mixed with other sulfides or host rock

AI-generated identification · may be incorrect

Dark gray to brassy metallic luster with granular/crystalline faces; pyrite hardness 6–6.5 Mohs, cubic crystal system, poor cleavage, and specific gravity about 5.0. The image is insufficient to confirm composition or distinguish pyrite from marcasite, chalcopyrite, or sulfide-rich ore.

Identified September 8, 2026More mineral →

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At a glance

Common name: Metallic sulfide mineral specimen, likely pyrite-bearing ore
Scientific name: Likely pyrite (FeS₂), possibly mixed with other sulfides or host rock
Category: mineral
Identified: September 8, 2026
Method: Standard

AI Estimated Value

About $2–$20 for a small common fragment; $20–$100+ if crystals are well formed or the specimen contains attractive 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

Sulfide minerals commonly form in hydrothermal veins, sedimentary exhalative deposits, and igneous-related ore bodies, from ancient Precambrian rocks to geologically recent systems. Pyrite forms when iron and sulfur combine under low-oxygen conditions.

Uses & applications

Pyrite is collected, historically used as a sulfur source, and sometimes processed for sulfuric acid or metal recovery; it has limited jewelry use. Ore-grade material may contain valuable copper, zinc, lead, silver, or gold.

Geological facts

Its metallic appearance can resemble gold, but pyrite is harder and less malleable. A streak test, hardness test, and ideally chemical or X-ray analysis are needed for reliable identification.

Field identification & locations

Look for brassy color, cubic forms, metallic luster, and a greenish-black to brownish-black streak; avoid destructive tests on valuable specimens. Common localities include Spain, Peru, Italy, China, and hydrothermal ore districts worldwide.