mineral
Milky Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 (Mohs scale); Color: White, cloudy; Luster: Vitreous to greasy; Crystal Structure: Trigonal (hexagonal prisms); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65
- Hardness
- 7 (Mohs scale)
- Color
- White, cloudy
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 (Mohs scale); Color: White, cloudy; Luster: Vitreous to greasy; Crystal Structure: Trigonal (hexagonal prisms); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65
Formation & geological history
Forms in hydrothermal veins or as a major constituent of igneous rocks like granite. The cloudiness is caused by tiny liquid or gas inclusions trapped during crystal growth.
Uses & applications
Used in electronics for its piezoelectric properties, as an abrasive, and in glassmaking. Collectible for metaphysical use and decorative landscaping.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Milky quartz is the most common variety of quartz found in nature.
Field identification & locations
Identify by its hardness (scratches glass), lack of cleavage, and white 'milky' appearance. Found worldwide in nearly every geological environment.
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