mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, transparent to translucent with a vitreous luster, conchoidal fracture, and trigonal crystal system.
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Physical properties
Hardness of 7 on the Mohs scale, transparent to translucent with a vitreous luster, conchoidal fracture, and trigonal crystal system.
Formation & geological history
Formed in igneous, metamorphic, and sedimentary environments through the crystallization of silica-rich solutions and magmas.
Uses & applications
Used extensively in electronics, glassmaking, oscillators, abrasive materials, and as a semi-precious gemstone.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits strong piezoelectric properties.
Field identification & locations
Easily identified by its high hardness (scratches glass) and lack of cleavage; found globally in nearly all geological settings.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Limonite
FeO(OH)•nH2O
mineral
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