mineral
Quartz pebble
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically gray or translucent white color, waxy to vitreous luster, and conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, typically gray or translucent white color, waxy to vitreous luster, and conchoidal fracture.
Formation & geological history
Formed through the crystallization of silica-rich solutions or cooling magma, later weathered and water-worn into smooth pebbles in stream beds.
Uses & applications
Used in landscaping, decorative gravel, grit manufacturing, and gemstone tumbling.
Geological facts
Quartz is one of the most abundant minerals in the Earth's continental crust and exhibits piezoelectric properties.
Field identification & locations
Identified easily by its high hardness (scratches glass) and lack of cleavage; found globally in rivers, beaches, and sedimentary deposits.
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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