mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Hardness 7 Mohs; white to translucent, vitreous-to-waxy luster, commonly lacking visible crystal faces and showing conchoidal fracture. It has a hexagonal crystal structure, no cleavage, and specific gravity near 2.65.

Identified August 11, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich fluids crystallize in veins, cavities, and fractures of igneous or metamorphic rocks; individual pieces may be geologically ancient, commonly Paleozoic or older depending on host rock.

Uses & applications

Common quartz is used in glass, ceramics, abrasives, electronics, and construction aggregate; attractive pieces are collected or used ornamentally, though this specimen appears low-grade.

Geological facts

The cloudy appearance results from microscopic fluid inclusions, fractures, or dispersed mineral impurities rather than a different quartz species.

Field identification & locations

Identify by its glassy appearance, white translucency, lack of cleavage, and ability to scratch ordinary glass; avoid confusing it with calcite, which is softer and cleaves readily. Common worldwide, especially in quartz veins.