mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale; Color: Milky white, transparent, or tinted with iron oxide patches; Luster: Vitreous to greasy; Crystal Structure: Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- Milky white, transparent, or tinted with iron oxide patches
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 on Mohs scale; Color: Milky white, transparent, or tinted with iron oxide patches; Luster: Vitreous to greasy; Crystal Structure: Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
Formation & geological history
Formed in a wide variety of geological environments including igneous, metamorphic, and sedimentary rocks. Commonly crystallizes from silica-rich hydrothermal veins and pegmatites over millions of years.
Uses & applications
Used in glassmaking, electronics (quartz crystal oscillators), abrasive materials, gemstone carving, and mineral collecting.
Geological facts
Quartz is one of the most abundant minerals in Earth's continental crust. It exhibits piezoelectric properties, meaning it can generate an electrical charge in response to applied mechanical stress.
Field identification & locations
Identified in the field by its high hardness (scratches glass), conchoidal fracture, and lack of cleavage. Found worldwide in almost every geological setting.
