mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

White to cream, opaque and glassy-to-pearly, with a granular crystalline texture; Mohs hardness 7, trigonal crystal structure, no cleavage, and conchoidal fracture. The rough, weathered surface may include iron staining or other mineral grains.

Identified October 11, 2026More mineral →

Explore 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

Likely a quartz-rich vein or pegmatite fragment formed as silica-rich fluids crystallized in cracks in older rocks; quartz occurs in rocks of many geological ages. The specimen’s exact origin and age cannot be determined from the image.

Uses & applications

Quartz is used in glassmaking, ceramics, electronics, and decorative stone; attractive pieces are collected or used in jewelry.

Geological facts

Quartz is one of Earth’s most abundant minerals and is highly resistant to weathering.

Field identification & locations

Look for hardness sufficient to scratch glass, lack of cleavage, and a glassy fracture; common worldwide in veins, pegmatites, and many rock types. The image suggests milky quartz, but visual identification alone cannot confirm composition.