mineral

Weathered quartz-rich pebble

Quartz (SiO₂), possibly quartzite or quartz-bearing vein rock

AI-generated identification · may be incorrect

Hardness about 7 Mohs; pale cream to translucent gray with a dull, weathered luster and irregular granular/crystalline texture. The visible sparkly patches are likely exposed quartz grains; cleavage is absent, with conchoidal fracture possible.

Identified August 18, 2026More mineral →

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Physical properties

Formation & geological history

Likely a naturally weathered and water-worn fragment derived from quartz vein material or quartzite; its precise geological age and source cannot be determined from the image. Quartz commonly forms in hydrothermal veins or metamorphic rocks.

Uses & applications

Primarily a common collecting specimen or landscaping stone; clear, attractive varieties may be used ornamentally, but this piece appears low-grade for jewelry or industrial applications.

Geological facts

Quartz is one of Earth’s most abundant minerals and is highly resistant to weathering, allowing it to accumulate in streambeds and gravel deposits.

Field identification & locations

Identify it by its glassy grains, lack of cleavage, and resistance to scratching steel; a streak test should be white, and it may scratch ordinary glass. Common worldwide in stream gravels, veins, and quartzite terrains.