mineral

Quartz-rich rock, likely milky quartz

Quartz (SiO₂), possibly a massive quartz aggregate

AI-generated identification · may be incorrect

White to pale beige, rough and opaque with a vitreous-to-dull luster; quartz has a trigonal crystal structure, Mohs hardness 7, and no cleavage. The photo alone cannot confirm its exact composition or specific gravity.

Identified September 26, 2026More mineral →

Explore Quartz-rich rock, likely milky quartz in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Quartz commonly crystallizes from silica-rich fluids in veins or forms as grains in igneous and metamorphic rocks; its age and specific formation environment cannot be determined from the image.

Uses & applications

Quartz is used in glass, electronics, abrasives, and decorative stone; this small rough piece is mainly suitable for a collection.

Geological facts

Quartz is one of Earth’s most abundant minerals and often occurs as massive, interlocking aggregates rather than distinct crystals.

Field identification & locations

The pale, lumpy appearance is consistent with quartz, but a scratch test on glass (quartz can scratch it) and examination for translucency or fracture can help distinguish it from softer lookalikes. Quartz occurs worldwide.