mineral
Milky Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 Mohs; Color: White to translucent; Luster: Vitreous to greasy; Crystal Structure: Trigonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65
- Hardness
- 7 Mohs
- Color
- White to translucent
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 Mohs; Color: White to translucent; Luster: Vitreous to greasy; Crystal Structure: Trigonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65
Formation & geological history
Formed from hydrothermal solutions or cooling magma in veins and pegmatites. The cloudy white color is caused by tiny inclusions of gas or liquid trapped during crystal growth.
Uses & applications
Used in glassmaking, abrasives, electronics (piezoelectric properties), and as decorative gravel or gemstones.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Milky quartz specifically gets its opaque look from 'fluid inclusions' trapped billions of years ago.
Field identification & locations
Identify by its 7 hardness (scratches glass), lack of cleavage, and waxy luster. Commonly found in riverbeds and mountainous terrain globally.
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