mineral
Milky Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 Mohs; Color: White to translucent; Luster: Vitreous/waxy; Crystal structure: Trigonal; Cleavage: None/Conchoidal fracture.
- Hardness
- 7 Mohs
- Color
- White to translucent
- Luster
- Vitreous/waxy
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Physical properties
Hardness: 7 Mohs; Color: White to translucent; Luster: Vitreous/waxy; Crystal structure: Trigonal; Cleavage: None/Conchoidal fracture.
Formation & geological history
Forms in hydrothermal veins or pegmatites when silica-rich fluids cool. The milky color is caused by tiny inclusions of gas and liquid trapped during crystal growth.
Uses & applications
Used in glassmaking, abrasives, electronics (piezoelectric properties), and frequently as a collector's decorative stone or 'healing' crystal.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Pure quartz is clear, but milky quartz is the most common variety found in nature.
Field identification & locations
Identify by its hardness (scratches glass), lack of cleavage, and white opaque color. Found globally in almost 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
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