mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, colorless or white, vitreous luster, trigonal crystal system, conchoidal fracture with no true cleavage, and specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, colorless or white, vitreous luster, trigonal crystal system, conchoidal fracture with no true cleavage, and specific gravity of 2.65.
Formation & geological history
Forms primarily from cooling magma in igneous environments and through precipitation in hydrothermal veins or sedimentary rocks over millions of years.
Uses & applications
Used extensively in electronics, glassmaking, precision instruments, abrasive materials, and as a popular gemstone or collectible specimen.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectric properties, meaning it generates an electrical charge under mechanical stress.
Field identification & locations
Easily identified by its high hardness (scratches glass), lack of cleavage, and conchoidal fracture; found worldwide in pegmatites, hydrothermal veins, and sandstones.
