mineral
Quartz Crystal
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, transparent to translucent, vitreous luster, trigonal crystal system with hexagonal prisms, conchoidal fracture, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, transparent to translucent, vitreous luster, trigonal crystal system with hexagonal prisms, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Forms primarily from hydrothermal solutions in pegmatites, veins, and cavities in various rock types over millions of years.
Uses & applications
Used in electronics, oscillators, watches, glassmaking, and frequently as a gemstone or specimen for mineral collectors.
Geological facts
Quartz is one of the most abundant minerals in Earth's continental crust and exhibits piezoelectric properties, meaning it can generate an electrical charge under mechanical stress.
Field identification & locations
Identified by its distinct crystal shape, high hardness (scratches glass), and lack of cleavage. Found globally in almost all geological environments.
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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
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
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