mineral

Weathered quartz-rich rock fragment

Indeterminate; likely quartz-bearing silicate rock

AI-generated identification · may be incorrect

Small tan-gray, irregular specimen with dull to slightly glassy luster and no visible crystal faces; likely Mohs hardness about 6–7 if quartz-rich. Cleavage and specific gravity cannot be determined reliably from the image.

Identified August 29, 2026More mineral →

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Physical properties

Formation & geological history

Probably a naturally weathered fragment of quartzite, granite, or another silicate rock; age and precise formation environment cannot be established visually.

Uses & applications

No significant industrial or jewelry use as shown; primarily a field or educational specimen unless testing reveals an attractive mineral or gemstone variety.

Geological facts

The rough texture and pale coloration are consistent with common quartz-bearing material, but the photograph lacks scale, fresh surfaces, and diagnostic features for confident identification.

Field identification & locations

Commonly found in river gravels, soils, outcrops, and construction fill. Check for glassy quartz grains, visible feldspar or mica, acid reaction, streak, hardness, and density; a scratch test and close inspection are needed.