mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale. Color: White, colorless, milky. Luster: Vitreous to greasy. Crystal structure: Trigonal. Cleavage: None, conchoidal fracture. Specific gravity: 2.65.
- Hardness
- 7 on Mohs scale
- Color
- White, colorless, milky
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 on Mohs scale. Color: White, colorless, milky. Luster: Vitreous to greasy. Crystal structure: Trigonal. Cleavage: None, conchoidal fracture. Specific gravity: 2.65.
Formation & geological history
Formed in a wide variety of geological environments, commonly in igneous, metamorphic, and sedimentary rocks, often crystallizing from silica-rich hydrothermal solutions.
Uses & applications
Used in electronics, oscillators, glassmaking, abrasive materials, gemstone carving, and ornamental objects.
Geological facts
Quartz is one of the most abundant minerals in the Earth's continental crust and exhibits piezoelectric properties, meaning it can generate an electrical charge under mechanical stress.
Field identification & locations
Easily identified by its high hardness (scratches glass), conchoidal fracture, and lack of cleavage. Found worldwide in nearly all types of rock formations.
