mineral
Quartz in Matrix
Silicon Dioxide (SiO2)
Hardness: 7 on Mohs scale. Color: White, grayish with orange/yellow iron staining. Luster: Vitreous to dull. Crystal structure: Trigonal. Specific gravity: 2.65.
- Hardness
- 7 on Mohs scale
- Color
- White, grayish with orange/yellow iron staining
- Luster
- Vitreous to dull
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Physical properties
Hardness: 7 on Mohs scale. Color: White, grayish with orange/yellow iron staining. Luster: Vitreous to dull. Crystal structure: Trigonal. Specific gravity: 2.65.
Formation & geological history
Formed in hydrothermal veins and pegmatites, crystallizing from silica-rich aqueous solutions over millions of years.
Uses & applications
Used in glassmaking, electronics, oscillators, and lapidary arts.
Geological facts
Quartz is one of the most abundant minerals in 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) and lack of cleavage. Found worldwide in nearly all geological environments.
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