mineral
Quartz
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 no cleavage with 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, transparent to translucent with a vitreous luster, hexagonal crystal system, and no cleavage with conchoidal fracture.
Formation & geological history
Forms in a wide variety of temperature and pressure conditions, commonly crystallizing from silica-rich hydrothermal veins and magmatic pegmatites.
Uses & applications
Widely used in electronics for oscillators, glass manufacturing, abrasives, and as a gemstone or specimen in jewelry.
Geological facts
Quartz is one of the most abundant and ubiquitous minerals found in the Earth's continental crust.
Field identification & locations
Easily identified by its distinct conchoidal fracture and hardness of 7, which scratches glass; common worldwide including California.
