mineral
Milky Quartz
Silicon Dioxide (SiO2)
Hardness: 7 Mohs; Color: White to translucent; Luster: Vitreous to greasy; Crystal Structure: Hexagonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65.
- Hardness
- 7 Mohs
- Color
- White to translucent
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 Mohs; Color: White to translucent; Luster: Vitreous to greasy; Crystal Structure: Hexagonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65.
Formation & geological history
Formed in hydrothermal veins and pegmatites through the crystallization of silica-rich solutions at high temperatures. Milky white color is caused by microscopic inclusions of gas or liquid.
Uses & applications
Used in the manufacture of glass, ceramics, and abrasives. Tumbled specimens are popular for metaphysical use and lapidary practice.
Geological facts
Milky Quartz is the most common variety of crystalline quartz. Historically, it was used to create tools and ornaments by ancient civilizations due to its durability.
Field identification & locations
Identified by its white, cloudy appearance and the ability to scratch glass. Found globally, especially in mountain ranges with metamorphic and igneous activity.
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