mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectMohs hardness of 7, colorless or white with vitreous luster, hexagonal crystal system, and conchoidal fracture with 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
Mohs hardness of 7, colorless or white with vitreous luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.
Formation & geological history
Forms in igneous, metamorphic, and sedimentary environments through the crystallization of silica-rich solutions or cooling magma.
Uses & applications
Widely used in electronics, glassmaking, abrasive powders, and as a semi-precious gemstone in jewelry.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectric properties.
Field identification & locations
Identified easily by its high hardness (scratches glass), lack of cleavage, and vitreous luster; found globally in veins and sands.
