mineral

White Quartz

Silicon Dioxide (SiO2)

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

Identified July 29, 2026More mineral →

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Physical properties

Hardness of 7 on the Mohs scale, white or milky 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 solutions or cooling magma. Can be found in igneous, metamorphic, and sedimentary rocks globally.

Uses & applications

Used in glassmaking, abrasives, electronics, ornamental objects, and crystal collecting.

Geological facts

Quartz is one of the most abundant minerals in Earth's continental crust. Its piezoelectric properties make it essential in electronic devices for precise frequency control.

Field identification & locations

Easily identified by its high hardness (scratches glass), lack of cleavage, and white or transparent appearance. Found worldwide in nearly every geological setting.