mineral

White Quartz

Quartz (Silicon Dioxide, SiO2)

Hardness of 7 on the Mohs scale, typically white or milky in color, vitreous to greasy luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.

Identified August 1, 2026More mineral →

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Physical properties

Hardness of 7 on the Mohs scale, typically white or milky in color, vitreous to greasy luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.

Formation & geological history

Forms in a wide variety of geological environments, most commonly crystallized from silica-rich hydrothermal veins, pegmatites, and igneous magmas, as well as metamorphic and sedimentary rocks over millions of years.

Uses & applications

Used in glassmaking, abrasives, foundry sands, electronics (piezoelectric oscillators), gemstone carvings, and decorative landscaping stone.

Geological facts

Quartz is one of the most abundant and widely distributed minerals on Earth's continental crust. Its piezoelectric properties mean it can generate an electric charge under mechanical stress, making it vital for modern timekeeping devices.

Field identification & locations

Easily identified in the field by its high hardness (scratches glass easily), lack of cleavage, and distinct conchoidal fracture. Found worldwide in nearly every geological setting.