mineral

Native gold-bearing sulfide specimen

Native gold (Au), likely intergrown with pyrite (FeS₂) or chalcopyrite (CuFeS₂)

AI-generated identification · may be incorrect

Metallic yellow-gold and brassy, with irregular granular crystals; gold is Mohs 2.5–3 and very dense (specific gravity 19.3), while associated sulfides are harder, typically Mohs 3.5–6. Gold is malleable and nonmagnetic; pyrite/chalcopyrite are brittle.

Identified September 14, 2026More mineral →

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At a glance

Common name: Native gold-bearing sulfide specimen
Scientific name: Native gold (Au), likely intergrown with pyrite (FeS₂) or chalcopyrite (CuFeS₂)
Category: mineral
Identified: September 14, 2026
Method: Standard

AI Estimated Value

Approximately $10–$100 for a tiny unverified specimen; more if assay-confirmed native gold, with value depending mainly on gold weight and provenance.

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

Forms in hydrothermal quartz veins and sulfide-rich ore deposits, commonly during Precambrian to younger mountain-building events. The image alone cannot establish the exact mineral proportions or age.

Uses & applications

Gold is valuable for jewelry, electronics, dentistry, and investment; sulfide minerals are important ore indicators and may be processed for copper or other metals.

Geological facts

Native gold remains bright yellow, whereas pyrite is more pale brass-colored and brittle; gold deforms rather than powders when scratched. A streak, density, malleability, and assay test are needed for confirmation.

Field identification & locations

Commonly found in quartz veins, placer gravels, and volcanic or metamorphic mining districts, including Australia, Canada, the western United States, and South Africa. Professional testing is recommended because pyrite and chalcopyrite can resemble gold.