mineral
Clear Quartz
Silicon Dioxide (SiO2)
Hardness: 7 on the Mohs scale. Color: Colorless to white. Luster: Vitreous (glassy). Crystal structure: Hexagonal. Cleavage: None (conchoidal fracture). Specific gravity: 2.65.
- Hardness
- 7 on the Mohs scale
- Color
- Colorless to white
- Luster
- Vitreous (glassy)
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Physical properties
Hardness: 7 on the Mohs scale. Color: Colorless to white. Luster: Vitreous (glassy). Crystal structure: Hexagonal. Cleavage: None (conchoidal fracture). Specific gravity: 2.65.
Formation & geological history
Forms in igneous, metamorphic, and sedimentary rocks. Common in pegmatites and hydrothermal veins.
Uses & applications
Used in electronics, optics, glassmaking, jewelry, and crystal healing.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. It exhibits piezoelectric properties.
Field identification & locations
Identified by its hardness, lack of cleavage, and characteristic hexagonal crystal shape when naturally formed. Common worldwide.
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