mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and hexagonal crystal system. It typically appears colorless or white, but impurities can create various colors.
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Physical properties
Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and hexagonal crystal system. It typically appears colorless or white, but impurities can create various colors.
Formation & geological history
Forms in igneous, metamorphic, and sedimentary environments through crystallization from silica-rich melts, hydrothermal veins, and precipitation.
Uses & applications
Used in electronics, glassmaking, abrasives, construction materials, and as a gemstone or specimen for collectors.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits strong piezoelectric properties, making it essential in watchmaking and electronic oscillators.
Field identification & locations
Identified by its high hardness (scratches glass), lack of cleavage, and distinct conchoidal fracture. Found worldwide in nearly all geological settings.
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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