mineral

Gold-bearing quartz vein rock

Quartz (SiO₂) with probable native gold and iron-oxide staining

AI-generated identification · may be incorrect

Gray-white, massive quartz with glassy to sugary luster, irregular fracture, and no obvious cleavage; quartz hardness is Mohs 7. Yellow metallic patches may be native gold, though brass-colored sulfides such as chalcopyrite or weathered pyrite are also possible.…

Identified August 27, 2026More mineral →

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Physical properties

Formation & geological history

Likely hydrothermal quartz formed when mineral-rich fluids filled fractures in host rock, commonly during Precambrian to younger orogenic mineralization. Oxidation near the surface can produce the rusty orange-brown iron staining visible here.

Uses & applications

Gold-bearing quartz is chiefly an ore and collector specimen; quartz itself is used in glass, ceramics, electronics, and construction. Confirmed attractive specimens may be displayed or sold as nugget-bearing matrix.

Geological facts

Visible yellow metal cannot be identified reliably from a photograph; gold is soft, malleable, and does not tarnish, whereas pyrite and chalcopyrite are brittle and commonly tarnish. A streak, hardness, density, and assay test are more diagnostic.

Field identification & locations

Common in gold districts worldwide, including Australia, California, Nevada, Canada, and South Africa. Test cautiously: gold scratches with a knife and flattens under pressure; pyrite fractures, and quartz scratches glass.