mineral
Milky Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale; Color: Opaque white to translucent; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- Opaque white to translucent
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 on Mohs scale; Color: Opaque white to translucent; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
Formation & geological history
Formed in hydrothermal veins or as a primary constituent of various rock types. The white color is caused by tiny inclusions of gas or liquid trapped during crystal growth.
Uses & applications
Used in glassmaking, as an abrasive, in electronics (piezoelectric properties), jewelry, and as a decorative stone in landscaping.
Geological facts
Milk quartz is the most common variety of crystalline quartz. It is often found in massive form rather than distinct crystals and frequently contains small amounts of gold in certain geological environments.
Field identification & locations
Identify by its hardness (scratches glass), white color, and lack of cleavage. It is found globally in almost all igneous, metamorphic, and sedimentary environments.
