mineral
Clear Quartz (Tumbled)
Silicon Dioxide (SiO2)
Hardness: 7 Mohs scale; Color: Colorless/Transparent; Luster: Vitreous; Crystal Structure: Hexagonal (trigonal); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65.
- Hardness
- 7 Mohs scale
- Color
- Colorless/Transparent
- Luster
- Vitreous
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Physical properties
Hardness: 7 Mohs scale; Color: Colorless/Transparent; Luster: Vitreous; Crystal Structure: Hexagonal (trigonal); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65.
Formation & geological history
Formed in various geological environments including igneous (granitic pegmatites), metamorphic, and sedimentary sites. It crystallizes from silica-rich hydrothermal fluids or magma cooling.
Uses & applications
Used in glassmaking, electronics (piezoelectric properties), jewelry, sandpaper abrasives, and as decorative collectibles.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Its name comes from the Greek word 'krustallos', meaning ice.
Field identification & locations
Identify by its hardness (scratches glass), glass-like luster, and hexagonal crystal habits if not tumbled. Found globally in almost all rock types.
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Mineral/Rock
Banded Gneiss (River Rock/Pebble)
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Metamorphic Rock
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Green Apatite on Albite
Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]
mineral