mineral
Quartz pebble
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, vitreous luster, conchoidal fracture, and typically colorless or milky white.
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Physical properties
Hardness of 7 on Mohs scale, vitreous luster, conchoidal fracture, and typically colorless or milky white.
Formation & geological history
Formed through the mechanical weathering and water-driven tumbling of larger quartz-bearing rocks in rivers or coastlines.
Uses & applications
Used in landscaping, decorative gravel, and occasionally as raw material for glassmaking or silicon extraction.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and possesses piezoelectric properties.
Field identification & locations
Identified by its high hardness, inability to be scratched by steel, and smooth, rounded water-worn shape.
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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