
mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, typically white or brownish in this specimen, vitreous luster, hexagonal crystal system, and no true 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 Mohs scale, typically white or brownish in this specimen, vitreous luster, hexagonal crystal system, and no true cleavage.
Formation & geological history
Forms in wide variety of igneous, metamorphic, and sedimentary environments through the cooling of magma or precipitation from hydrothermal solutions.
Uses & applications
Used extensively in electronics, glassmaking, construction materials, and as a popular gemstone or collector mineral.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectric properties, making it vital for watches and electronics.
Field identification & locations
Identified by its high hardness (scratches glass), conchoidal fracture, and lack of cleavage. Found globally in almost all geological settings.