Rock Identifier
White Quartz (Silicon Dioxide (SiO2)) — mineral
mineral

White Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

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

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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.

Formation & geological history

Forms in wide varieties of igneous, metamorphic, and sedimentary environments through hydrothermal veins and crystallization from silica-rich solutions.

Uses & applications

Used in electronics, glassmaking, precision instruments, and as a popular tumbled stone or gemstone in jewelry.

Geological facts

Milky quartz gets its cloudy appearance from microscopic fluid inclusions trapped during crystal growth.

Field identification & locations

Easily identified by its high hardness of 7 which easily scratches glass and its lack of cleavage. Found worldwide in nearly every geological environment.