mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectMohs hardness of 7; colorless to white or yellow; vitreous luster; trigonal crystal system; conchoidal fracture with no true cleavage.
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Physical properties
Mohs hardness of 7; colorless to white or yellow; vitreous luster; trigonal crystal system; conchoidal fracture with no true cleavage.
Formation & geological history
Forms in igneous, metamorphic, and sedimentary environments through hydrothermal precipitation or crystallization from silica-rich melts.
Uses & applications
Used in electronics, glassware, precision instruments, and as an ornamental gemstone or collector mineral.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectric properties.
Field identification & locations
Identify in the field by its high hardness, lack of cleavage, and distinct conchoidal fracture. Found worldwide in nearly all geological settings.
