mineral
Milky Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, milky white color due to microscopic fluid inclusions, vitreous to greasy luster, and conchoidal fracture without cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, milky white color due to microscopic fluid inclusions, vitreous to greasy luster, and conchoidal fracture without cleavage.
Formation & geological history
Forms hydrothermally from silica-rich aqueous solutions in veins, pegmatites, and metamorphic rocks across various geological eras.
Uses & applications
Used in glassmaking, abrasives, electronics, and as an affordable gemstone or specimen for rock collectors.
Geological facts
Milky quartz is the most common variety of the quartz family and can be found in virtually every geological environment worldwide.
Field identification & locations
Easily identified in the field by its distinct white milky appearance, lack of cleavage, and high hardness that scratches glass easily.
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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
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous