mineral

Iron-stained quartz-bearing rock (likely gold-bearing quartz vein fragment)

Quartz (SiO₂) with iron oxides/hydroxides, possibly limonite/goethite and minor sulfides

AI-generated identification · may be incorrect

Hardness about 7 for quartz; white-gray translucent areas with rusty yellow-orange to dark gray patches, vitreous to dull luster, and irregular fracture. The image is insufficient to confirm visible gold or identify a specific ore mineral.

Identified September 5, 2026More mineral →

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At a glance

Common name: Iron-stained quartz-bearing rock (likely gold-bearing quartz vein fragment)
Scientific name: Quartz (SiO₂) with iron oxides/hydroxides, possibly limonite/goethite and minor sulfides
Category: mineral
Identified: September 5, 2026
Method: Standard

AI Estimated Value

About $1-$15 as an unattributed small specimen; roughly $20-$100 if attractively mineralized, locality-labeled, or assay-confirmed gold-bearing.

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 in a hydrothermal vein where silica-rich fluids deposited quartz and sulfide/iron minerals in fractures; oxidation later produced the rusty surface. Its age depends on the source deposit and cannot be determined visually.

Uses & applications

Commonly collected as a mineral specimen and sometimes processed as gold ore; quartz is widely used in glass, ceramics, abrasives, and electronics. Jewelry value is low unless assays confirm precious metal or it is exceptionally aesthetic.

Geological facts

Rusty coloration commonly reflects limonite or goethite after weathering of iron sulfides such as pyrite. Orange-yellow color alone is not proof of gold; fire assay or laboratory analysis is required.

Field identification & locations

Look for glassy quartz, rusty iron staining, sulfide cubes, and unusually heavy metallic grains; test hardness and streak, but avoid destructive testing without permission. Similar material occurs in hydrothermal gold districts worldwide, including Nevada, California, Australia, and Canada.