mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and hexagonal crystal system. It typically appears white, clear, or milky.
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Physical properties
Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and hexagonal crystal system. It typically appears white, clear, or milky.
Formation & geological history
Forms in a wide variety of geological environments, including igneous, metamorphic, and sedimentary rocks, often crystallizing from silica-rich hydrothermal solutions.
Uses & applications
Used extensively in electronics, glassmaking, abrasives, and as a gemstone or decorative mineral specimen.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectric properties, making it vital for precise timekeeping in watches.
Field identification & locations
Easily identified in the field by its high hardness (scratches glass), lack of cleavage, and characteristic conchoidal fracture.
