mineral

Milky quartz

Quartz (SiO₂), likely massive milky quartz

AI-generated identification · may be incorrect

Hardness 7 Mohs; white to translucent with a vitreous-to-greasy luster and no cleavage. Trigonal crystal structure, though this specimen appears massive rather than well-crystallized.

Identified October 14, 2026More mineral →

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Physical properties

Hardness 7 Mohs; white to translucent with a vitreous-to-greasy luster and no cleavage. Trigonal crystal structure, though this specimen appears massive rather than well-crystallized.

Formation & geological history

Forms when silica-rich fluids crystallize in veins and fractures, or during igneous and metamorphic processes. Quartz is widespread across rocks of many geological ages; the image alone cannot determine this specimen’s age or exact origin.

Uses & applications

Used as a silica source in glassmaking and other industries; attractive pieces are collected and sometimes cut or polished for ornaments.

Geological facts

The cloudy appearance commonly results from microscopic fluid or gas inclusions that scatter light.

Field identification & locations

Look for hardness sufficient to scratch glass, lack of cleavage, and often irregular or conchoidal fracture; common in quartz veins worldwide. The pictured white, translucent texture is consistent with milky quartz.