mineral

Quartz-bearing sulfide ore (possibly galena in a quartz matrix)

Likely galena (PbS) with quartz (SiO₂); identification is uncertain from the image alone

AI-generated identification · may be incorrect

Gray, metallic-looking patches occur in a pale gray-white matrix. Galena has Mohs hardness 2.5, cubic crystals and perfect cubic cleavage; quartz is Mohs 7 with a vitreous luster and no cleavage.

Identified September 25, 2026More mineral →

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At a glance

Common name: Quartz-bearing sulfide ore (possibly galena in a quartz matrix)
Scientific name: Likely galena (PbS) with quartz (SiO₂); identification is uncertain from the image alone
Category: mineral
Identified: September 25, 2026
Method: Standard

AI Estimated Value

About $5–$40 for a common small specimen; larger, well-crystallized or silver-rich pieces may be worth more.

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

Gray, metallic-looking patches occur in a pale gray-white matrix. Galena has Mohs hardness 2.5, cubic crystals and perfect cubic cleavage; quartz is Mohs 7 with a vitreous luster and no cleavage.

Formation & geological history

If galena-bearing, it likely formed when hot, mineral-rich fluids deposited sulfides in fractures or veins, commonly alongside quartz. The specimen’s age and exact locality cannot be determined from the image.

Uses & applications

Galena is the principal lead ore; quartz is used in glass, construction and electronics. Attractive specimens are also collected.

Geological facts

Galena is unusually dense and can contain silver. Avoid crushing or grinding suspected galena, since lead-bearing dust is toxic.

Field identification & locations

Check heft and cleavage: galena is very dense and breaks into shiny cubic fragments, unlike most gray rocks. Similar-looking metallic minerals require testing or expert examination; the image is insufficient for a firm identification.