mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically white, clear, or pinkish/brownish due to impurities, vitreous (glassy) luster, trigonal crystal system, conchoidal fracture, and specific gravity around 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, typically white, clear, or pinkish/brownish due to impurities, vitreous (glassy) luster, trigonal crystal system, conchoidal fracture, and specific gravity around 2.65.
Formation & geological history
Forms in a wide variety of geological environments, commonly crystallizing from silica-rich hydrothermal veins and magma, or as a primary component of igneous, metamorphic, and sedimentary rocks.
Uses & applications
Used widely in glassmaking, electronics, oscillators, abrasives, gemstones, and construction materials.
Geological facts
Quartz is one of the most abundant minerals in the Earth's continental crust and exhibits piezoelectric properties, meaning it can generate an electrical charge in response to mechanical stress.
Field identification & locations
Identified easily by its high hardness (scratches glass), lack of cleavage, and conchoidal fracture. Found worldwide in almost every geological setting.
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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
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Septarian Pebble
Septarian nodule / Concretion
sedimentary