mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, transparent to opaque, vitreous luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, transparent to opaque, vitreous luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.
Formation & geological history
Forms in a wide variety of geological environments, including igneous, metamorphic, and sedimentary rocks, often crystallizing from hydrothermal solutions or cooling magma.
Uses & applications
Used in electronics, manufacturing of glass and ceramics, abrasive materials, and as a popular gemstone or mineral specimen for collectors.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectric properties, making it essential in timekeeping devices.
Field identification & locations
Easily identified by its high hardness (scratches glass), lack of cleavage, and distinct crystal shape when well-formed; found globally in nearly all rock types.
