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; 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; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
Formation & geological history
Forms in igneous, metamorphic, and sedimentary environments, most often crystalizing from hydrothermal veins during the final stages of magma cooling.
Uses & applications
Used in glassmaking, as an abrasive, in electronics (piezoelectric properties), and frequently as decorative landscaping stone or for metaphysical collecting.
Geological facts
Milky quartz gets its cloudy appearance from tiny inclusions of gas or liquid trapped during the crystal's growth. It is the most common variety of crystalline quartz found on Earth.
Field identification & locations
Identify by its ability to scratch glass, its lack of cleavage, and its milky-white appearance. It is ubiquitous in mountainous regions and riverbeds worldwide.
