mineral

Milky quartz

Quartz, silicon dioxide (SiO₂)

AI-generated identification · may be incorrect

Hardness 7 Mohs; translucent white to colorless with a vitreous luster and irregular fracture. Trigonal crystal structure; no cleavage, specific gravity about 2.65.

Identified October 13, 2026More mineral →

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Physical properties

Hardness 7 Mohs; translucent white to colorless with a vitreous luster and irregular fracture. Trigonal crystal structure; no cleavage, specific gravity about 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

Commonly used for ornaments, carvings, and mineral collections; quartz is also important in glassmaking and electronics, though this rough specimen is primarily decorative.

Geological facts

Its cloudy appearance results from microscopic fluid or gas inclusions and defects that scatter light.

Field identification & locations

The specimen appears consistent with rough milky quartz, but a photo cannot confirm identity. Look for glassy luster, hardness sufficient to scratch glass, and absence of cleavage; quartz is widespread in veins and many rock types worldwide.