mineral
Quartz (Druzy)
Silicon Dioxide (SiO2)
Hardness: 7 on Mohs scale; Color: Clear to milky white; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65.
- Hardness
- 7 on Mohs scale
- Color
- Clear to milky white
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 on Mohs scale; Color: Clear to milky white; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65.
Formation & geological history
Formed via hydrothermal activity where silica-rich fluids cool and precipitate in cavities of rocks. It can be found in igneous such as pegmatites, metamorphic geofes, or sedimentary environments.
Uses & applications
Used in semi-precious jewelry, high-end watches, electronics (due to piezoelectric properties), and as decorative collector specimens.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Druzy refers to a coating of fine crystals on a rock surface that looks like sugar.
Field identification & locations
Identify by its hardness (scratches glass), lack of cleavage, and characteristic hexagonal crystal terminations. Commonly found in geodes and mountainous regions worldwide.
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Mineral/Rock
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Green Apatite on Albite
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mineral