mineral

Gold bearing Quartz with Sulfides

Auriferous Quartz with Pyrite/Arsenopyrite (Au + SiO2)

AI-generated identification · may be incorrect

Hardness: 7 (Quartz) to 6 (Pyrite); Color: Rusty brown, grey, yellowish-white with metallic inclusions; Luster: Vitreous to metallic; Crystal Structure: Hexagonal (Quartz), Cubic (Pyrite)

Hardness: 7 (Quartz) to 6 (Pyrite)
Color: Rusty brown, grey, yellowish-white with metallic inclusions
Luster: Vitreous to metallic

Identified July 17, 2026More mineral →

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Physical properties

Hardness: 7 (Quartz) to 6 (Pyrite); Color: Rusty brown, grey, yellowish-white with metallic inclusions; Luster: Vitreous to metallic; Crystal Structure: Hexagonal (Quartz), Cubic (Pyrite)

Formation & geological history

Formed in hydrothermal veins where hot, mineral-rich fluids circulate through crustal fractures, often associated with orogenic belts and volcanic activity.

Uses & applications

Primary source for gold extraction in mining; specimen collecting for prospectors and mineral enthusiasts.

Geological facts

The rusty 'gossan' appearance on the surface is caused by the oxidation of iron-bearing sulfide minerals, which often act as a pathfinder for gold deposits.

Field identification & locations

Identify by high density, presence of metallic 'flecks' or sulfides, and heavy iron-oxide staining (rust). Commonly found in historic gold-mining districts.