mineral

Likely milky quartz or quartz-rich rock

Quartz, silicon dioxide (SiO₂); exact identification is limited by the blurry image

AI-generated identification · may be incorrect

White, opaque to translucent, with a dull-to-glassy luster and irregular fracture; quartz has Mohs hardness 7, no cleavage, hexagonal crystal structure, and specific gravity about 2.65. The granular texture could also indicate quartzite or a pale feldspar-rich rock.

Identified September 4, 2026More mineral →

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Physical properties

Formation & geological history

Quartz forms in igneous and hydrothermal veins, while quartzite forms when quartz sandstone is metamorphosed; ages may range from Precambrian to recent. The specimen appears natural and unpolished.

Uses & applications

Quartz is used in glass, ceramics, abrasives, electronics, and countertops; attractive pieces are collected. Quartzite is used as building stone, aggregate, and decorative stone.

Geological facts

Quartz does not scratch easily with a steel knife, though it can scratch ordinary glass. A streak test should be white; acid reaction is absent, helping distinguish it from calcite.

Field identification & locations

Common worldwide, especially in quartz veins and metamorphic terrains. Confirm with hardness, glass-scratching ability, lack of cleavage, and a close examination for visible feldspar or granular quartzite texture.