mineral
Quartz Crystal Cluster
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 with no true cleavage.
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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 with no true cleavage.
Formation & geological history
Formed from hydrothermal solutions rich in silica cooling and precipitating within cavities or fractures in host rocks over millions of years.
Uses & applications
Used extensively in electronics, glassmaking, jewelry, ornamental items, and metaphysical collections.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectric properties, meaning it generates an electrical charge under mechanical stress.
Field identification & locations
Identified by its high hardness (scratches glass), lack of cleavage, and distinct hexagonal crystal habit. Common worldwide 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
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