mineral

Metallic sulfide-bearing rock, possibly galena-rich ore

Likely galena (PbS) with iron sulfides and quartz/rock matrix; exact identification requires testing

AI-generated identification · may be incorrect

Gray to silver-gray, strongly metallic and earthy luster, irregular granular texture, and apparent sulfide mineralization. Galena has Mohs hardness 2.5–2.75, cubic crystals and perfect cubic cleavage; the specimen’s specific gravity and cleavage are not visually confirmable.

Identified August 10, 2026More mineral →

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At a glance

Common name: Metallic sulfide-bearing rock, possibly galena-rich ore
Scientific name: Likely galena (PbS) with iron sulfides and quartz/rock matrix; exact identification requires testing
Category: mineral
Identified: August 10, 2026
Method: Standard

AI Estimated Value

About $5–$25 for a common rough ore specimen; $30–$150+ for large, well-formed galena crystals or specimens with visible silver mineralization.

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 hydrothermal ore formed when mineral-rich fluids filled fractures or replacement zones, commonly in limestone or volcanic rocks. Such deposits range from Paleozoic to younger ages depending on locality.

Uses & applications

Lead-zinc sulfide ores are mined for lead, silver, and sometimes zinc; attractive galena crystals are collected but are not typically used as jewelry because lead sulfide is toxic.

Geological facts

Galena commonly produces a gray-black streak and a dense, unusually heavy feel. Avoid dust, ingestion, and prolonged handling; wash hands after contact and keep away from children.

Field identification & locations

Common localities include Missouri and Idaho (USA), Mexico, Peru, Australia, and Europe. Check for cubic cleavage, a dark gray streak, high density, and metallic shine; a streak and specific-gravity test can distinguish it from graphite or ordinary rock.