mineral
Quartz
Silicon Dioxide (SiO2)
Hardness of 7 on the Mohs scale, typically white or colorless, vitreous luster, hexagonal crystal system, conchoidal fracture, specific gravity of 2.65
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Physical properties
Hardness of 7 on the Mohs scale, typically white or colorless, vitreous luster, hexagonal crystal system, conchoidal fracture, specific gravity of 2.65
Formation & geological history
Forms in a wide variety of geological environments, including igneous, metamorphic, and sedimentary rocks. Often crystallizes from silica-rich hydrothermal veins and pegmatites.
Uses & applications
Used in electronics, oscillators, glassmaking, abrasives, and as a semi-precious gemstone or mineral specimen.
Geological facts
Quartz is one of the most abundant and widespread minerals on Earth's continental crust, known for its piezoelectric properties.
Field identification & locations
Easily identified by its high hardness (scratches glass), lack of cleavage, and characteristic conchoidal fracture. Found worldwide.
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