mineral
Quartz crystal cluster
Quartz (SiO₂), likely milky quartz
AI-generated identification · may be incorrectWhite to translucent with a vitreous luster and irregular crystalline faces; quartz has a trigonal crystal structure, Mohs hardness 7, no cleavage, and specific gravity about 2.65. The photo does not show enough detail to confirm the identification.
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Physical properties
White to translucent with a vitreous luster and irregular crystalline faces; quartz has a trigonal crystal structure, Mohs hardness 7, no cleavage, and specific gravity about 2.65. The photo does not show enough detail to confirm the identification.
Formation & geological history
Quartz commonly crystallizes from silica-rich fluids in veins and cavities, across a wide range of geological ages and settings.
Uses & applications
Quartz is used in glassmaking, electronics, and jewelry; small natural clusters are mainly collected as decorative specimens.
Geological facts
Quartz is one of Earth’s most abundant minerals and commonly forms six-sided crystals, though this specimen’s crystal habit is unclear.
Field identification & locations
Look for glassy surfaces, hardness sufficient to scratch ordinary glass, and no true cleavage; quartz occurs worldwide in veins, pegmatites, and many rocks.
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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