
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, transparent to translucent with a vitreous luster, hexagonal crystal system, and lacks cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, transparent to translucent with a vitreous luster, hexagonal crystal system, and lacks cleavage.
Formation & geological history
Formed in hydrothermal veins and pegmatites, precipitating from silica-rich solutions at varying temperatures over millions of years.
Uses & applications
Widely used in electronics, oscillator clocks, glass manufacturing, gemstones, and metaphysical collections.
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 crystal habit and scratch resistance to steel; found worldwide and completely consistent with the geological setting of southern Brazil.