mineral
Quartz Crystal
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, clear to translucent color, vitreous luster, hexagonal crystal system, no distinct cleavage, specific gravity of 2.65
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Physical properties
Hardness of 7 on the Mohs scale, clear to translucent color, vitreous luster, hexagonal crystal system, no distinct cleavage, specific gravity of 2.65
Formation & geological history
Formed in hydrothermal veins and pegmatites through the cooling and precipitation of silica-rich fluids over millions of years
Uses & applications
Used in electronics, oscillators, gemstones, glassware, and as a popular mineral specimen for collectors
Geological facts
Quartz is one of the most abundant and varied minerals on Earth, forming the foundation of the entire silicate mineral family
Field identification & locations
Easily identified by its characteristic 7 Mohs hardness, lack of cleavage, and distinct crystal habit; found 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
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