mineral
Quartz
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically white or transparent, vitreous luster, hexagonal crystal system, and conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, typically white or transparent, vitreous luster, hexagonal crystal system, and conchoidal fracture.
Formation & geological history
Forms in a wide range of geological environments, predominantly as a primary mineral in igneous, metamorphic, and sedimentary rocks.
Uses & applications
Used extensively in glassmaking, electronics, oscillators, abrasives, and as gemstones or decorative mineral specimens.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectric properties.
Field identification & locations
Easily identified by its distinct hardness (scratches glass), lack of cleavage, and six-sided crystal habits when well-formed.
