mineral

Gold-bearing quartz vein specimen

Native gold (Au) in quartz, likely with iron-oxide staining and possible sulfides

AI-generated identification · may be incorrect

Yellow metallic patches and a glassy to dull quartz-rich matrix; quartz hardness ~7, gold ~2.5–3 Mohs, gold has a very high specific gravity (~19.3) and malleable texture. The image alone cannot confirm whether the yellow material is gold, pyrite, or another sulfide.

Identified August 19, 2026More mineral →

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Physical properties

Formation & geological history

Hydrothermal fluids deposited quartz and metallic minerals in fractures, commonly during Precambrian to younger orogenic mineralization. Weathering may oxidize associated sulfides and enrich visible native gold near the surface.

Uses & applications

Gold-bearing quartz is collected as an ore or mineral specimen; confirmed native gold has jewelry and investment value, while quartz is used industrially and decoratively.

Geological facts

Real gold remains yellow in shadow, does not tarnish, and deforms rather than crumbling under a steel point; pyrite is harder, brittle, and often brassy. A streak, density, hardness, and acid test—or professional assay—is needed for confirmation.

Field identification & locations

Common in hydrothermal vein districts worldwide, including Australia, California, Alaska, Canada, and South Africa. Estimated value: $10–$100 if ordinary quartz/pyrite; roughly $100–$1,000+ if assay-confirmed visible gold, depending on gold weight and specimen quality.