mineral

Likely quartz-rich gravel fragment (uncertain identification)

Quartz, silicon dioxide (SiO₂), possibly mixed with feldspar or other light-colored minerals

AI-generated identification · may be incorrect

Small irregular, pale gray-white specimen with a granular/sparkly surface and no clearly visible crystal faces; quartz hardness is Mohs 7, vitreous luster, hexagonal crystal system, and poor cleavage. The image is insufficient to determine exact composition or distinguish quartz from a crushed aggregate fragment.

Identified August 23, 2026More mineral →

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Physical properties

Formation & geological history

Probably a naturally occurring quartz-bearing rock fragment or crushed landscaping gravel, formed in igneous, metamorphic, or sedimentary settings; its geological age cannot be determined visually. It appears unpolished and may be mechanically broken.

Uses & applications

Quartz gravel is used for landscaping, concrete and aggregate, filtration, and industrial silica; attractive pieces may be collected but are rarely used as gemstones.

Geological facts

Quartz commonly shows glassy luster and conchoidal fracture, while feldspar is generally softer (Mohs 6) and cleaves readily. A glass-streak test, hardness test, and close inspection with magnification would improve identification.

Field identification & locations

Common in quartz-rich gravels worldwide; test whether it scratches glass but not a steel blade, and inspect for cleavage, translucency, and crystal faces. Avoid destructive tests if provenance matters.