mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically white or colorless, vitreous luster, hexagonal crystal system, and conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, typically white or colorless, vitreous luster, hexagonal crystal system, and conchoidal fracture.
Formation & geological history
Forms in igneous, metamorphic, and sedimentary environments through the cooling of magma or precipitation from silica-rich solutions.
Uses & applications
Used extensively in electronics, glassmaking, abrasives, gemstones, and oscillator clocks due to its piezoelectric properties.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits strong piezoelectric properties.
Field identification & locations
Easily identified in the field by its high hardness (scratches glass), lack of cleavage, and distinct crystal habit when well-formed.
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Gneiss or Mica Schist with Garnet
Metamorphic
Limonite
FeO(OH)•nH2O
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Limonite
FeO(OH)•nH2O
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Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
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igneous
Feldspar
Feldspar Group (Tectosilicate, e.g., KAlSi3O8)
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