mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Typically Mohs 7; cloudy white to gray with a vitreous-to-waxy luster and uneven fracture. It has a trigonal crystal structure, no cleavage, and specific gravity around 2.65.

Identified October 4, 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

Typically Mohs 7; cloudy white to gray with a vitreous-to-waxy luster and uneven fracture. It has a trigonal crystal structure, no cleavage, and specific gravity around 2.65.

Formation & geological history

Forms when silica-rich fluids crystallize in veins and cavities, or during cooling of silica-rich magma. Quartz occurs in rocks of many geological ages.

Uses & applications

Used in glass and engineered stone, abrasives, and electronics; attractive pieces are collected or fashioned into ornaments.

Geological facts

Quartz is one of Earth’s most abundant minerals and can persist through weathering because it is relatively hard and chemically resistant.

Field identification & locations

The specimen appears to be a rough, translucent-white quartz fragment; confirm with glass-scratching hardness and lack of cleavage. Quartz is widespread worldwide, especially in veins and granitic terrains.