mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectMohs hardness of 7; colorless to pale white; vitreous luster; trigonal crystal system; conchoidal fracture with no true cleavage; specific gravity of 2.65.
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 to pale white; vitreous luster; trigonal crystal system; conchoidal fracture with no true cleavage; specific gravity of 2.65.
Formation & geological history
Forms in igneous, metamorphic, and sedimentary environments through crystallization from silica-rich fluids and melts over geological timescales.
Uses & applications
Used in electronics, glassmaking, abrasive powders, and as a popular gemstone or collector mineral specimen.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits strong piezoelectric properties, making it essential for clocks.
Field identification & locations
Identified by its high hardness (scratches glass), lack of cleavage, and glassy luster. Found globally in almost all geological settings.
