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, conchoidal fracture, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, typically white or colorless, vitreous luster, hexagonal crystal system, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Formed in igneous, metamorphic, and sedimentary environments through the crystallization of silica-rich hydrothermal solutions and magmas.
Uses & applications
Used widely in electronics, glassmaking, abrasives, and as a semi-precious gemstone in jewelry.
Geological facts
Quartz is one of the most abundant and ubiquitous minerals found in the Earth's continental crust.
Field identification & locations
Easily identified by its high hardness, lack of cleavage, and distinctive conchoidal fracture; found globally in pegmatites, veins, and sandstones.
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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
Feldspar
Feldspar Group (Tectosilicate, e.g., KAlSi3O8)
mineral
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous