mineral
Quartz Druze (Crystalline Quartz)
Silicon Dioxide (SiO2)
Hardness: 7 (Mohs scale); Color: Clear to milky white/light tan; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
- Hardness
- 7 (Mohs scale)
- Color
- Clear to milky white/light tan
- Luster
- Vitreous (glassy)
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Physical properties
Hardness: 7 (Mohs scale); Color: Clear to milky white/light tan; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
Formation & geological history
Formed through hydrothermal processes where silica-rich fluids precipitate in rock cavities or veins. This specimen shows a druzy clusters of macro-crystals likely formed in a volcanic or sedimentary pocket.
Uses & applications
Used in gemstone production, decorative aquarium/home decor, and as a raw source of silicon for electronics; highly prized by mineral collectors.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. This specific 'druzy' formation refers to the coating of crystals onto a rock surface.
Field identification & locations
Identify by its ability to scratch glass and its distinct six-sided terminations. Found globally, especially in regions with igneous activity or sandstone formations.
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Metamorphic
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metamorphic
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Mineral
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Mineral/Rock
Granite
Granite (Phaneritic intrusive igneous rock)
igneous