mineral

Likely translucent quartz/chalcedony fragment

Silicon dioxide (SiO₂), probably microcrystalline quartz or quartz

AI-generated identification · may be incorrect

Small, translucent gray-beige fragment with a waxy to glassy luster and irregular conchoidal-looking edges; quartz hardness is Mohs 7, with no cleavage. The photo is insufficient to confirm crystal structure or specific gravity.

Identified August 15, 2026More mineral →

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Physical properties

Formation & geological history

Likely broken from a silica-rich vein, chert, or agate-bearing rock through weathering or impact; such silica may form in cavities or hydrothermal veins from the Precambrian to the present.

Uses & applications

Quartz and chalcedony are used in glass, electronics, abrasives, and decorative objects; attractive pieces may be used as lapidary material or inexpensive collectibles.

Geological facts

Its translucency and curved fracture are consistent with silica, but the specimen could also be glass or another pale mineral without testing. A steel file should not scratch quartz, while quartz can scratch ordinary glass.

Field identification & locations

Commonly found in gravel, river deposits, silica veins, chert nodules, and volcanic cavities worldwide. Confirm with hardness, specific gravity, and a close inspection for bubbles or flow lines, which would indicate glass.