mineral

Quartz-rich rock, possibly milky quartz

Quartz (SiO₂); exact specimen identification is uncertain from the image

AI-generated identification · may be incorrect

Rough, pale cream-white and tan, with a dull to slightly glassy surface and no obvious cleavage. Quartz has Mohs hardness 7, a trigonal crystal structure, and specific gravity about 2.65; the specimen’s hardness cannot be confirmed visually.

Identified October 11, 2026More mineral →

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Physical properties

Formation & geological history

If quartz-rich, it likely formed when silica-rich fluids crystallized in fractures or veins; such veins occur in rocks of many geological ages. The image does not show enough detail to determine its precise formation or age.

Uses & applications

Quartz is used in glass, electronics, abrasives, and decorative stone; this small, unworked piece has little apparent commercial use.

Geological facts

Quartz is among Earth’s most abundant minerals and commonly occurs in veins and many rock types.

Field identification & locations

Look for a glassy fracture, lack of cleavage, and the ability to scratch glass for quartz; the tan material could be staining or another mineral. Similar specimens are widespread, but locality and closer inspection are needed for a firm identification.