mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale. Color: Clear, white, gray, smoky, pink, purple, etc. Luster: Vitreous (glassy). Crystal Structure: Trigonal. Cleavage: None (exhibits conchoidal fracture). Specific Gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- Clear, white, gray, smoky, pink, purple, etc
- Luster
- Vitreous (glassy)
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Physical properties
Hardness: 7 on Mohs scale. Color: Clear, white, gray, smoky, pink, purple, etc. Luster: Vitreous (glassy). Crystal Structure: Trigonal. Cleavage: None (exhibits conchoidal fracture). Specific Gravity: 2.65
Formation & geological history
Forms in a wide variety of geological environments, most commonly in igneous, metamorphic, and sedimentary rocks. It is a major constituent of granite, sandstone, and pegmatites, precipitating from hydrothermal veins and silica-rich solutions.
Uses & applications
Used in electronics (oscillators, watches), glassmaking, abrasives, gemstones, and construction materials.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust, surpassed only by feldspar. Its piezoelectric properties make it invaluable for modern electronics.
Field identification & locations
Easily identified by its distinctive hardness (scratches glass easily), lack of cleavage, and conchoidal fracture. Found worldwide in nearly every type of geological terrain.
