mineral

Quartz-rich vein rock, possibly gold-bearing quartz

Massive quartz (SiO₂), with probable iron-oxide and sulfide staining; exact identification requires testing

AI-generated identification · may be incorrect

White to cream, massive and granular, with vitreous-to-dull luster and gray-green/brown inclusions. Quartz hardness is Mohs 7, lacks cleavage, has conchoidal fracture, and specific gravity about 2.65; visible yellow color is not proof of gold.

Identified August 15, 2026More mineral →

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At a glance

Common name: Quartz-rich vein rock, possibly gold-bearing quartz
Scientific name: Massive quartz (SiO₂), with probable iron-oxide and sulfide staining; exact identification requires testing
Category: mineral
Identified: August 15, 2026
Method: Standard

AI Estimated Value

$1-$20 as an ordinary quartz specimen; approximately $25-$200+ if assay-confirmed gold is present, depending on gold content and appearance.

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

Likely formed when silica-rich hydrothermal fluids filled fractures in surrounding rock, potentially depositing sulfides and later iron-oxide alteration. Its age depends on the host deposit and cannot be determined from the photograph.

Uses & applications

Quartz vein material is used for silica, aggregate, and mineral collecting; genuine gold-bearing specimens may have substantial value. It is not suitable for jewelry without cutting and confirmation of durability or precious-metal content.

Geological facts

Gold commonly occurs with quartz, pyrite, chalcopyrite, or iron oxides, but these can look similar to brassy yellow minerals. A gold identification requires density, streak, hardness, acid, or assay testing.

Field identification & locations

Common in hydrothermal veins worldwide, especially gold districts. Check whether yellow grains are malleable, leave a yellow streak, and resist scratching; pyrite is brittle and leaves a dark streak, while quartz scratches glass.