mineral

Possible weathered quartz-rich rock or iron-stained mineral fragment

Indeterminate; possibly quartz (SiO₂) with iron-oxide inclusions

AI-generated identification · may be incorrect

Small, rough brown-gray fragment with a dull to slightly glassy luster and irregular fracture; apparent hardness may be around 6–7 if quartz-rich, but texture and composition cannot be confirmed from the image. No clear crystal faces or cleavage are visible.

Identified August 7, 2026More mineral →

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Physical properties

Formation & geological history

Likely a naturally weathered fragment from a quartz-bearing vein, sandstone, or altered igneous rock; iron oxides may produce the brown coloration. Geological age and formation environment cannot be determined visually.

Uses & applications

Mostly a common collecting specimen; quartz-rich material may be used as aggregate or, if clear and attractive, as lapidary material, but this piece appears too small and opaque for significant commercial use.

Geological facts

The brown color may result from hematite or goethite coatings rather than the primary mineral. A streak test, hardness test, and close examination of fresh surfaces would greatly improve identification.

Field identification & locations

Commonly found in soils, stream gravels, weathered outcrops, and quartz veins. Test whether it scratches glass and inspect its streak on unglazed porcelain; avoid destructive testing if preservation matters.