mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and hexagonal crystal system. It typically appears white, clear, or stained yellow-brown by iron oxides.
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, conchoidal fracture, and hexagonal crystal system. It typically appears white, clear, or stained yellow-brown by iron oxides.
Formation & geological history
Forms in diverse geological environments including igneous pegmatites, hydrothermal veins, and sedimentary deposits through crystallization from silica-rich fluids.
Uses & applications
Used in electronics, glassmaking, precision instruments, abrasive materials, and as a popular gemstone or specimen for collectors.
Geological facts
Quartz is one of the most abundant and durable minerals in Earth's continental crust. Its piezoelectric properties make it essential for keeping time in quartz watches.
Field identification & locations
Identified by its high hardness (scratches glass), lack of cleavage, and distinct conchoidal fracture. It is globally ubiquitous and easily found in rivers and quartz veins.
