mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

White to translucent, vitreous-to-waxy luster, uneven fracture, and no obvious cleavage; Mohs hardness 7 and specific gravity about 2.65. The cloudy appearance comes from microscopic fluid inclusions, fractures, or impurities.

Identified August 16, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich hydrothermal fluids crystallize in veins and cavities, commonly in igneous and metamorphic rocks. Individual specimens may range from ancient Precambrian material to much younger geological formations.

Uses & applications

Used as a decorative and collectible mineral, aggregate, and source material for glass and silicon products; attractive pieces may be polished, though this specimen appears rough and common.

Geological facts

Quartz is one of Earth’s most abundant minerals and is chemically resistant to weathering. Milky quartz commonly occurs with feldspar, mica, metallic ores, and other vein minerals.

Field identification & locations

Likely milky quartz based on its white, translucent, massive texture; it can be distinguished from calcite by its greater hardness—quartz scratches glass, while calcite does not. Common worldwide, especially in hydrothermal veins and granitic terrains.