mineral
Quartz (Granular)
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale; Color: Colorless to white/gray; Luster: Vitreous to greasy; Crystal Structure: Trigonal (hexagonal); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- Colorless to white/gray
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 on Mohs scale; Color: Colorless to white/gray; Luster: Vitreous to greasy; Crystal Structure: Trigonal (hexagonal); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65
Formation & geological history
Commonly forms in all types of geological environments (igneous, metamorphic, and sedimentary) through hydrothermal processes or magma cooling/recrystallization.
Uses & applications
Used in glass manufacturing, electronics (due to piezoelectric properties), construction as an abrasive, and widely collected as mineral specimens.
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 (will scratch glass), lack of cleavage, and crystal habit. Found globally, especially in mountain ranges and river sediments.
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
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
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