Mineral
Quartz
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale. Color: Generally white to translucent in massive form, often with iron staining (tan/brown). Luster: Vitreous to greasy. Fracture: Conchoidal. Cleavage: None. Specific gravity: 2.65.
- Hardness
- 7 on Mohs scale
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 on Mohs scale. Color: Generally white to translucent in massive form, often with iron staining (tan/brown). Luster: Vitreous to greasy. Fracture: Conchoidal. Cleavage: None. Specific gravity: 2.65.
Formation & geological history
Formed from the crystallization of silica-rich magma or from hydrothermal veins. Occurs in almost all geological environments and is a major constituent of many igneous, metamorphic, and sedimentary rocks.
Uses & applications
Used extensively in glassmaking, construction, electronics (oscillators), abrasives, and as a gemstone or ornamental stone.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Its piezoelectric properties make it essential in watches and radios.
Field identification & locations
Identifiable by its hardness (scratches glass), lack of cleavage, and conchoidal fracture. Extremely common worldwide.
More like this
Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Septarian Pebble
Septarian nodule / Concretion
sedimentary