
mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, clear to white color, vitreous luster, hexagonal crystal system, and conchoidal fracture.
Identified More mineral →
Explore Quartz in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 7 on the Mohs scale, clear to white color, vitreous luster, hexagonal crystal system, and conchoidal fracture.
Formation & geological history
Forms in a wide variety of geological environments, including igneous, metamorphic, and sedimentary rocks from silica-rich hydrothermal solutions or cooling magma.
Uses & applications
Widely used in electronics, glassmaking, abrasive materials, precision instruments, and gemstone jewelry.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectric properties.
Field identification & locations
Identified by its high hardness, lack of cleavage, and distinct conchoidal fracture; found globally in nearly all rock types.