
mineral
Milky Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 (Mohs scale); Color: Milky white to translucent; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
- Hardness
- 7 (Mohs scale)
- Color
- Milky white to translucent
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 (Mohs scale); Color: Milky white to translucent; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
Formation & geological history
Formed through the crystallization of silica-rich hydrothermal fluids in veins or as a primary constituent in igneous rocks like granite. The milky appearance is caused by tiny liquid or gas inclusions trapped during crystal growth.
Uses & applications
Used in glass manufacturing, as an abrasive, in the production of silicon metal for electronics, and as decorative stone or landscaping gravel.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Milky quartz is often referred to as 'Snow Quartz' in metaphysical circles.
Field identification & locations
Identify in the field by its hardness (it will scratch glass), its white waxy appearance, and the lack of cleavage planes. Frequently found in riverbeds, mountain ranges, and near quartz veins.
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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