mineral

Likely quartz-rich rock fragment

Unidentified pale, granular silicate specimen; possibly quartz or quartzite

AI-generated identification · may be incorrect

Creamy white to pale yellow, rough and granular with a matte appearance. Hardness and crystal structure cannot be confirmed from the photo; quartz, if present, has Mohs hardness 7 and a trigonal crystal structure.

Identified October 15, 2026More mineral →

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Physical properties

Formation & geological history

The image does not show diagnostic features sufficient to determine the rock type, age, or formation process. Quartz-rich fragments can form in many igneous, sedimentary, and metamorphic settings.

Uses & applications

If confirmed as quartz or quartzite, similar material is used in glassmaking, abrasives, construction aggregate, and occasionally lapidary work.

Geological facts

Color and grain texture alone are not enough for a reliable identification; a hardness or streak test and a closer view would help distinguish quartz from calcite or other pale minerals.

Field identification & locations

Check whether it scratches glass and whether it fizzes with dilute acid: quartz generally scratches glass and does not fizz, while calcite fizzes and is softer. Pale quartz-rich specimens are widespread worldwide.