mineral
Quartz fragment
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale; Color: Milky white to translucent; Luster: Vitreous to greasy; Crystal Structure: Hexagonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- Milky white to translucent
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 on Mohs scale; Color: Milky white to translucent; Luster: Vitreous to greasy; Crystal Structure: Hexagonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65
Formation & geological history
Formed in various geological environments, most commonly from the cooling of magma in igneous rocks or through hydrothermal vein activity as water-rich fluids cool. Found in rocks of all ages.
Uses & applications
Large-scale use in glass making, electronics (due to piezoelectric properties), abrasives, and as a semi-precious gemstone in jewelry. Small fragments are common in construction sand.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. It is highly resistant to both chemical and physical weathering.
Field identification & locations
Identify by its hardness (it can scratch glass) and lack of cleavage. Commonly found in riverbeds, mountains, and as a primary component of granite. Small fragments like this are ubiquitous across the globe.
