mineral
Smoky Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, brown to nearly black color, 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, brown to nearly black color, vitreous luster, hexagonal crystal system, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Formed through the natural irradiation of crystalline quartz, typically occurring in pegmatites and hydrothermal veins.
Uses & applications
Used widely in jewelry, as an ornamental stone, and in electronic oscillator components.
Geological facts
Its distinct smoky color is caused by free silicon formed from surrounding silicon dioxide by natural radiation.
Field identification & locations
Identified easily by its vitreous luster, brown translucency, and inability to be scratched by steel.
More like this
Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous