mineral

Quartz-rich stone, likely milky quartz

Quartz (silicon dioxide, SiO₂), possibly iron-stained or feldspar-bearing

AI-generated identification · may be incorrect

Whitish to pale yellow, translucent, and somewhat glassy; likely hardness about 7 Mohs, no cleavage, conchoidal fracture, and irregular granular texture. Exact identification is limited by the small, weathered specimen and image quality.

Identified August 15, 2026More mineral →

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Physical properties

Formation & geological history

Quartz crystallizes from silica-rich igneous fluids or forms in hydrothermal veins and metamorphic rocks; its age depends on the host deposit and may range from Precambrian to modern geological settings. Yellow coloration may result from iron-oxide staining or weathering.

Uses & applications

Common quartz is used in glass, ceramics, engineered stone, abrasives, electronics, and construction aggregate; attractive pieces are sold as inexpensive mineral specimens.

Geological facts

Quartz is one of Earth’s most abundant minerals and is piezoelectric, generating an electrical charge under pressure. Milky appearance usually results from microscopic fluid inclusions or fractures.

Field identification & locations

Look for a glassy surface, translucency, lack of cleavage, and inability to scratch it with a steel knife; quartz should scratch ordinary glass. Common in veins, stream gravels, granites, and metamorphic rocks worldwide.