mineral
Quartz Crystal
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, varies in color from colorless to brown or gray, vitreous luster, hexagonal crystal system, no cleavage, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, varies in color from colorless to brown or gray, vitreous luster, hexagonal crystal system, no cleavage, specific gravity of 2.65.
Formation & geological history
Formed in a wide variety of geological environments, including igneous, metamorphic, and sedimentary rocks, often precipitating from hydrothermal solutions.
Uses & applications
Used in electronics, watches, glassmaking, abrasives, and as a semi-precious gemstone or collector specimen.
Geological facts
Quartz is one of the most abundant and widely distributed minerals on Earth's continental crust.
Field identification & locations
Easily identified by its hardness and lack of cleavage; found worldwide in veins, pegmatites, and sedimentary deposits.
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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