
mineral
Milky Quartz (with Chlorite/Mineral Inclusions)
Silicon Dioxide (SiO2)
Hardness: 7 on Mohs scale; Color: Cloudy white to pale yellowish-green; Luster: Vitreous (glassy) to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture).
- Hardness
- 7 on Mohs scale
- Color
- Cloudy white to pale yellowish-green
- Luster
- Vitreous (glassy) to greasy
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Physical properties
Hardness: 7 on Mohs scale; Color: Cloudy white to pale yellowish-green; Luster: Vitreous (glassy) to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture).
Formation & geological history
Formed in hydrothermal veins and pegmatites through the cooling of silica-rich hydrothermal fluids. The cloudy appearance and inclusions suggest varying temperatures and mineral concentrations during crystal growth.
Uses & applications
Commonly used for ornamental purposes, metaphysical carving (towers/wands like shown), and in the manufacture of glass and electronics.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Milky quartz gets its cloudy appearance from microscopic fluid inclusions of gas or liquid trapped during crystal growth.
Field identification & locations
Identify in the field by its hardness (scratches glass), lack of cleavage, and hexagonal crystal habit if untrimmed. Found globally, especially in granite and metamorphic terrains.
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