mineral
Clear Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 (Mohs scale); Color: Colorless/Transparent; Luster: Vitreous (glass-like); Crystal structure: Trigonal/Hexagonal prism; Cleavage: None (conchoidal fracture); Specific gravity: 2.65
- Hardness
- 7 (Mohs scale)
- Color
- Colorless/Transparent
- Luster
- Vitreous (glass-like)
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Physical properties
Hardness: 7 (Mohs scale); Color: Colorless/Transparent; Luster: Vitreous (glass-like); Crystal structure: Trigonal/Hexagonal prism; Cleavage: None (conchoidal fracture); Specific gravity: 2.65
Formation & geological history
Formed from cooling magma or hydrothermal veins. It is found in all types of geological environments (igneous, metamorphic, and sedimentary) across all geological ages.
Uses & applications
Used in electronics for its piezoelectric properties, glassmaking, abrasives, jewelry (as a gemstone), and widely collected as metaphysical or decorative specimens.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. It is piezoelectric, meaning it generates an electric charge when mechanical pressure is applied.
Field identification & locations
Identify by its ability to scratch glass, its lack of cleavage, and its transparent hexagonal crystal points. It is found globally, notably in Brazil, Arkansas (USA), and Madagascar.
