mineral
Milky quartz
Quartz (SiO₂), crystalline silica
AI-generated identification · may be incorrectHardness 7 Mohs; white to translucent with a vitreous luster, hexagonal crystal structure, and no cleavage, breaking with irregular to conchoidal fractures. The rough, opaque-white appearance is consistent with milky quartz, though identification from the image is not definitive.
Identified More mineral →
Explore Milky quartz in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness 7 Mohs; white to translucent with a vitreous luster, hexagonal crystal structure, and no cleavage, breaking with irregular to conchoidal fractures. The rough, opaque-white appearance is consistent with milky quartz, though identification from the image is not definitive.
Formation & geological history
Forms when silica-rich fluids crystallize in veins and cavities, or as a common mineral in igneous and metamorphic rocks. Quartz occurs in rocks of many geological ages.
Uses & applications
Used in glassmaking, electronics, abrasives, and as an inexpensive ornamental or jewelry material.
Geological facts
Quartz is one of Earth’s most abundant minerals and is piezoelectric, producing an electric charge under mechanical pressure.
Field identification & locations
Look for glassy luster, hardness sufficient to scratch ordinary glass, and lack of cleavage; common worldwide in veins, pegmatites, and many rock types. The image alone cannot establish its exact locality or geological setting.
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
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
Gypsum (variety Selenite or Alabaster)
Calcium sulfate dihydrate (CaSO4·2H2O)
Mineral