mineral

Likely weathered quartz or quartz-rich pebble

Quartz, silicon dioxide (SiO₂)

AI-generated identification · may be incorrect

Pale cream, opaque-to-translucent, dull/waxy luster, and irregular rounded surfaces from abrasion or weathering; Mohs hardness 7, no cleavage, conchoidal fracture, and specific gravity about 2.65. The image is slightly out of focus, so exact identification is uncertain.

Identified August 12, 2026More mineral →

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Physical properties

Formation & geological history

Likely a naturally weathered quartz fragment or quartz-rich river pebble, formed in igneous, metamorphic, or hydrothermal rocks and later released by erosion. Its geological age cannot be determined from appearance alone.

Uses & applications

Common quartz is used in glass, ceramics, abrasives, electronics, and engineered stone; attractive pieces may be collected but usually have little commercial value.

Geological facts

Quartz is one of Earth’s most abundant minerals and is chemically resistant, allowing it to survive transport and accumulate in sands and gravels.

Field identification & locations

Test for a glass-scratching hardness, lack of cleavage, and white streak; quartz typically does not react with dilute hydrochloric acid. Common worldwide in veins, granites, metamorphic rocks, and stream gravels.