mineral

Small quartz-rich rock fragment

Likely quartz (SiO₂), possibly a pale granite or feldspar-bearing fragment

AI-generated identification · may be incorrect

Tiny, irregular, whitish-gray specimen with a granular texture and dull to slightly vitreous luster; quartz hardness is 7 Mohs, while feldspar is 6–6.5. Crystal structure cannot be confirmed from the image, and cleavage is not apparent.

Identified September 16, 2026More mineral →

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Physical properties

Formation & geological history

Most likely a naturally weathered fragment of quartz or quartz-bearing igneous rock formed from silicate-rich magma, commonly millions to billions of years old. Exact origin requires testing and a clearer specimen view.

Uses & applications

Common quartz-bearing rock is used in glass, ceramics, abrasives, aggregate, and construction; this fragment has negligible practical or jewelry value.

Geological facts

The visible grainy texture suggests an aggregate rather than a complete crystal. A glassy streakless surface and resistance to scratching are characteristic of quartz.

Field identification & locations

Look for hardness, translucent edges, and a white streak; quartz will not be scratched by a steel knife, though feldspar may be. Common worldwide in granites, veins, river gravels, and sands.