mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
AI-generated identification · may be incorrectSmall rough, cream-white translucent piece with a vitreous-to-waxy luster; quartz has Mohs hardness 7, a trigonal crystal structure, no cleavage, and conchoidal fracture. The image does not show enough detail to confirm the identification.
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Physical properties
Small rough, cream-white translucent piece with a vitreous-to-waxy luster; quartz has Mohs hardness 7, a trigonal crystal structure, no cleavage, and conchoidal fracture. The image does not show enough detail to confirm the identification.
Formation & geological history
Quartz commonly crystallizes from silica-rich fluids in veins and cavities, and also occurs in many igneous, metamorphic, and sedimentary rocks; its age depends on the host formation.
Uses & applications
Quartz is used in glass and electronics; attractive pieces are collected or used in simple jewelry and crafts.
Geological facts
Milky appearance results from microscopic fluid or gas inclusions that scatter light.
Field identification & locations
Compare its hardness and lack of cleavage with likely lookalikes; a small scratch test can help, though it may damage the specimen. Quartz is widespread worldwide, including in veins and pegmatites.
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Other mineral specimens
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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