mineral
Quartz crystal
Quartz (Silicon dioxide, SiO2)
AI-generated identification · may be incorrectHardness 7. Clear or white color with vitreous luster. Hexagonal crystal structure with conchoidal fracture.
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Physical properties
Hardness 7. Clear or white color with vitreous luster. Hexagonal crystal structure with conchoidal fracture.
Formation & geological history
Formed from silica-rich solutions in hydrothermal veins or pegmatites. Found worldwide in all rock types.
Uses & applications
Used in electronics, optics, jewelry, and as an abrasive. Popular among collectors.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. It exhibits piezoelectric properties.
Field identification & locations
Identified by its hexagonal shape, hardness (scratches glass), and lack of cleavage. Common in many 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