mineral
Milky Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on the Mohs scale. Color: Milky white to translucent white due to microscopic fluid inclusions. Luster: Vitreous to greasy. Crystal structure: Trigonal. Cleavage: None, exhibits conchoidal fracture. Specific gravity: 2.65.
- Hardness
- 7 on the Mohs scale
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 on the Mohs scale. Color: Milky white to translucent white due to microscopic fluid inclusions. Luster: Vitreous to greasy. Crystal structure: Trigonal. Cleavage: None, exhibits conchoidal fracture. Specific gravity: 2.65.
Formation & geological history
Forms from hydrothermal solutions, cooling magma, and metamorphic processes, precipitating in veins or cavities within various rock types over geological time scales.
Uses & applications
Used in gemstone collection, decorative items, lapidary art, and historically in glassmaking and abrasives.
Geological facts
Milky quartz is the most common variety of the quartz family and can be found globally in almost every geological environment.
Field identification & locations
Easily identified by its milky white appearance, vitreous luster, lack of cleavage, and high hardness which easily scratches glass. Found worldwide.
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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