mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Hardness: 7 on Mohs scale; Color: Cloudy white to opaque; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- Cloudy white to opaque
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 on Mohs scale; Color: Cloudy white to opaque; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
Formation & geological history
Formed primarily from hydrothermal veins or as a constituent in igneous pegmatites. The milky white color is caused by tiny fluid inclusions of gas or liquid trapped during crystal growth.
Uses & applications
Used as a source of silica for glassmaking, as an abrasive, and in landscaping or decorative gravel. Also used as a healing stone in metaphysical communities.
Geological facts
Milky Quartz is the most common variety of crystalline quartz. While often overlooked for clearer varieties like rock crystal, it can contain traces of gold in certain geological environments.
Field identification & locations
Identify by its hardness (it will scratch glass), its white waxy appearance, and absence of cleavage planes. It is found globally in almost all geological terrains.
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