mineral

Milky quartz

Quartz, silicon dioxide (SiO₂)

AI-generated identification · may be incorrect

Likely hardness 7 Mohs, white to translucent with a vitreous luster and irregular fracture; quartz has a hexagonal crystal structure and no cleavage. The photo alone cannot confirm the identification; the pale tan areas may be staining or another mineral.

Identified October 11, 2026More mineral →

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Physical properties

Formation & geological history

Quartz commonly crystallizes from silica-rich fluids in veins and cavities within many rock types, across a wide range of geological ages.

Uses & applications

Used in glassmaking, electronics, and ornamental objects; attractive pieces may be kept as inexpensive specimens.

Geological facts

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

Field identification & locations

Look for glassy luster, hardness sufficient to scratch glass, and absence of cleavage; common worldwide in veins and pegmatites. Similar pale minerals, including calcite, can be distinguished with hardness and acid tests.