mineral
White Quartz
Silicon Dioxide (SiO2)
Hardness: 7 on Mohs scale. Color: White to milky white. Luster: Vitreous to greasy. Crystal structure: Trigonal. Cleavage: None, exhibits conchoidal fracture. Specific gravity: 2.65.
- Hardness
- 7 on Mohs scale
- Color
- White to milky white
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 on Mohs scale. Color: White to milky white. Luster: Vitreous to greasy. 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 pegmatites and hydrothermal veins.
Uses & applications
Used in glassmaking, electronics, oscillators, abrasives, and as a semi-precious gemstone or crystal specimen in jewelry and decor.
Geological facts
Milky quartz gets its white color from microscopic fluid inclusions of gas or liquid trapped during crystal growth. It is one of the most abundant minerals on Earth's continental crust.
Field identification & locations
Easily identified by its hardness (scratches glass), lack of cleavage, and conchoidal fracture. Found worldwide in nearly every geological setting.
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