mineral

Milky quartz (likely quartz fragment)

Quartz, silicon dioxide (SiO₂)

AI-generated identification · may be incorrect

White to translucent, vitreous-to-waxy luster with a massive granular texture; Mohs hardness 7, no cleavage, conchoidal fracture, hexagonal crystal structure, and specific gravity about 2.65.

Identified August 28, 2026More mineral →

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Physical properties

White to translucent, vitreous-to-waxy luster with a massive granular texture; Mohs hardness 7, no cleavage, conchoidal fracture, hexagonal crystal structure, and specific gravity about 2.65.

Formation & geological history

Forms when silica-rich fluids crystallize in veins, cavities, or igneous rocks; specimens may range from Precambrian to recent geological settings. The rounded shape appears naturally weathered or possibly lightly tumbled.

Uses & applications

Used for glass, ceramics, abrasives, engineered stone, and decorative specimens; translucent pieces have modest lapidary value.

Geological facts

Milky appearance results from microscopic fluid inclusions, fractures, or impurities that scatter light. Quartz is one of Earth’s most abundant minerals.

Field identification & locations

Identify by its hardness—quartz can scratch ordinary glass—and lack of cleavage; it commonly occurs in hydrothermal veins, granite, sandstone, and river gravels worldwide. Confirm with a streak test and hardness comparison.