Rock Identifier
Milky Quartz (Silicon Dioxide (SiO2)) — mineral
mineral

Milky Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale, white to milky color with a vitreous to greasy luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.

Identified More mineral →
Explore Milky Quartz in the encyclopedia →

Identify your own rocks.

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

Physical properties

Hardness of 7 on the Mohs scale, white to milky color with a vitreous to greasy luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.

Formation & geological history

Forms hydrothermally from silica-rich aqueous solutions in veins, pegmatites, and metamorphic rocks across various geological eras.

Uses & applications

Used in electronics, oscillator components, glassmaking, and as a decorative specimen for mineral collectors.

Geological facts

Milky quartz is the most common variety of the quartz family and owes its white appearance to microscopic fluid inclusions trapped during growth.

Field identification & locations

Identified by its distinctive white color, high hardness that scratches glass, and lack of cleavage; found globally.