mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Likely massive, translucent-to-opaque white quartz with a vitreous to dull surface. Hardness 7 Mohs, trigonal crystal structure, no cleavage, and uneven fracture; specific gravity about 2.65.

Identified October 12, 2026More mineral →

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Physical properties

Likely massive, translucent-to-opaque white quartz with a vitreous to dull surface. Hardness 7 Mohs, trigonal crystal structure, no cleavage, and uneven fracture; specific gravity about 2.65.

Formation & geological history

Forms when silica-rich fluids crystallize in veins and fractures, or as quartz-rich material in igneous and metamorphic rocks. Quartz occurs in rocks of many ages; the specimen’s age and exact origin cannot be determined from the image.

Uses & applications

Commonly used as a decorative and lapidary stone, and industrial quartz is used in glass, ceramics, and electronics.

Geological facts

Quartz is one of Earth’s most abundant minerals and can scratch ordinary glass.

Field identification & locations

White color and glassy, irregular fracture are consistent with milky quartz; a hardness test or examination for crystal faces can help distinguish it from softer white minerals. Found worldwide, especially in quartz veins and pegmatites.