
mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous luster, hexagonal crystal system, and conchoidal fracture with no cleavage.
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, vitreous luster, hexagonal crystal system, and conchoidal fracture with no cleavage.
Formation & geological history
Forms in igneous, metamorphic, and sedimentary environments through cooling magmas, hydrothermal fluids, and precipitation.
Uses & applications
Widely used in electronics, glassmaking, precision instruments, 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.
Field identification & locations
Identified by its high hardness, lack of cleavage, and conchoidal fracture; commonly found worldwide in virtually all geological settings.