mineral

Metal-rich sulfide ore, likely galena-bearing rock

Galena (PbS) with pyrite/chalcopyrite in a host rock; exact identification requires testing

AI-generated identification · may be incorrect

Coarse gray metallic material with bright reflective grains and cavities; galena has Mohs hardness 2.5–2.75, cubic cleavage, silver-gray color, and very high density (~7.5 g/cm³). Pyrite is harder (6–6.5) and brassy, while the host may be metamorphic or igneous.

Identified September 12, 2026More mineral →

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At a glance

Common name: Metal-rich sulfide ore, likely galena-bearing rock
Scientific name: Galena (PbS) with pyrite/chalcopyrite in a host rock; exact identification requires testing
Category: mineral
Identified: September 12, 2026
Method: Standard

AI Estimated Value

About $5–$30 for a common rough specimen; substantially more only if crystals are large, attractive, or locality-documented.

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 as hydrothermal vein or massive sulfide mineralization when hot, metal-bearing fluids deposited sulfides in fractures; age depends on locality and cannot be determined from the image.

Uses & applications

Sulfide ores are mined for lead, silver, copper, and sometimes zinc; attractive pieces are collected, but this rough specimen is unlikely to have substantial market value.

Geological facts

Galena commonly forms sharp cubic crystals and is the principal ore of lead; weathering can produce toxic lead-bearing dust and secondary minerals.

Field identification & locations

Look for cubic cleavage, unusually heavy weight, metallic luster, and a dark gray streak; avoid scratching or inhaling dust, and use a lead test or laboratory analysis for confirmation. Common localities include Missouri, Idaho, Australia, Peru, and Mexico.