mineral
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, clear to brownish-white color, vitreous luster, hexagonal crystal system, no true cleavage, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, clear to brownish-white color, vitreous luster, hexagonal crystal system, no true cleavage, specific gravity of 2.65.
Formation & geological history
Forms from hydrothermal solutions or silica-rich fluids cooling and precipitating within cavities in rocks over millions of years.
Uses & applications
Used in electronics, watches, glassmaking, ornamental objects, and crystal collections.
Geological facts
Quartz is one of the most abundant minerals in the Earth's continental crust and exhibits piezoelectric properties.
Field identification & locations
Easily identified by its distinct crystal habit and high hardness which can scratch glass. Common worldwide in nearly 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