mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Mohs hardness 7; white to translucent with a vitreous-to-waxy luster and uneven fracture. Trigonal crystal structure; no cleavage. The specimen appears to be a small, rough, weathered quartz piece.

Identified October 14, 2026More mineral →

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Physical properties

Mohs hardness 7; white to translucent with a vitreous-to-waxy luster and uneven fracture. Trigonal crystal structure; no cleavage. The specimen appears to be a small, rough, weathered quartz piece.

Formation & geological history

Quartz commonly crystallizes from silica-rich fluids in veins and cavities, or forms as grains in many rock types. Its exact age and geological setting cannot be determined from the image.

Uses & applications

Used in glassmaking, electronics, and decorative stone; attractive pieces are collected or used in jewelry.

Geological facts

Milky appearance results from microscopic fluid or gas inclusions that scatter light.

Field identification & locations

Look for hardness near 7, glass-like luster, and lack of cleavage; quartz is widespread in veins and many igneous, metamorphic, and sedimentary rocks. The pictured piece is consistent with quartz, though visual identification alone is not definitive.