mineral
Milky Quartz
Quartz (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale; Color: White to translucent; Luster: Vitreous to greasy; Crystal Structure: Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- White to translucent
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 on Mohs scale; Color: White to translucent; Luster: Vitreous to greasy; Crystal Structure: Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
Formation & geological history
Formed from the cooling of silica-rich magma or precipitation from hydrothermal veins. The milky appearance is caused by tiny liquid or gas inclusions trapped during crystal growth.
Uses & applications
Used in glass manufacturing, abrasives, gemstones, electronics (oscillators), and as a common decorative landscaping stone.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Milky quartz is often found in massive form rather than distinct crystals.
Field identification & locations
Identified in the field by its hardness (scratches glass), lack of cleavage, and white color. Found globally in igneous, metamorphic, and sedimentary environments.
