mineral

White Quartz

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Milky white to translucent; Luster: Vitreous (glassy); Crystal Structure: Hexagonal/Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Hardness: 7 on Mohs scale
Color: Milky white to translucent
Luster: Vitreous (glassy)

Identified March 25, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Milky white to translucent; Luster: Vitreous (glassy); Crystal Structure: Hexagonal/Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments; commonly crystallizes from magma or precipitates from hydrothermal veins. It is found in geological formations ranging from the Precambrian to recent eras.

Uses & applications

Extensively used in glassmaking, abrasives, electronic oscillators (quartz watches), construction aggregates, and as a popular semi-precious gemstone in jewelry and metaphysical collecting.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. 'Milky quartz' gets its white appearance from tiny microscopic fluid inclusions of gas or liquid trapped during crystal growth.

Field identification & locations

Identify in the field by its ability to scratch glass (hardness) and its lack of cleavage. It is found globally, notably in the United States (Arkansas), Brazil, and Madagascar. Collectors look for well-defined crystal terminations.