mineral
Quartz Crystal
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, clear to white color, vitreous luster, hexagonal crystal system, and conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, clear to white color, vitreous luster, hexagonal crystal system, and conchoidal fracture.
Formation & geological history
Formed from cooling silica-rich hydrothermal solutions or magma in crustal cavities over millions of years.
Uses & applications
Extensively used in electronics, glassmaking, optics, precision instruments, and crystal healing or mineral collecting.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectric properties.
Field identification & locations
Identified by its high hardness, hexagonal prism habit, and lack of cleavage; found globally in igneous, metamorphic, and sedimentary rocks.
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Gneiss or Mica Schist with Garnet
Metamorphic
Limonite
FeO(OH)•nH2O
mineral
Limonite
FeO(OH)•nH2O
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Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Limonite
FeO(OH)•nH2O
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Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous