mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Typically Mohs hardness 7, vitreous to waxy luster, white to translucent, and hexagonal crystal structure; it has no cleavage and breaks with uneven to conchoidal fracture. The specimen appears rounded and opaque, with possible staining or inclusions; exact identification from the image alone is uncertain.

Identified October 16, 2026More mineral →

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Physical properties

Formation & geological history

Quartz commonly crystallizes from silica-rich fluids in veins and cavities, or forms as a component of igneous and metamorphic rocks. Its age depends on the host deposit and may range from millions to billions of years.

Uses & applications

Common quartz is used in glassmaking, electronics, abrasives, and decorative objects; attractive pieces may be collected or used in jewelry.

Geological facts

Milky appearance results from light scattering by tiny fluid or gas inclusions and internal defects.

Field identification & locations

Look for glassy luster, hardness sufficient to scratch glass, and absence of cleavage; quartz occurs worldwide in veins and many rock types. The visible cream coloring could also indicate another mineral, so testing is needed for certainty.