
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectMohs hardness 7, translucent milky-white color, vitreous to waxy luster with frosted beach-worn surface, trigonal crystal system, conchoidal fracture.
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Physical properties
Mohs hardness 7, translucent milky-white color, vitreous to waxy luster with frosted beach-worn surface, trigonal crystal system, conchoidal fracture.
Formation & geological history
Formed in hydrothermal veins or igneous pegmatites, then eroded, transported, and water-worn smooth by river or wave action over thousands of years.
Uses & applications
Used widely in ornamental crafts, jewelry, aggregate production, and silica extraction for glass and electronics.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Tumbling by water and sand creates its distinctive frosty, rounded texture.
Field identification & locations
Identify by its hardness (scratches glass and steel) and translucent cloudy appearance. Common along beaches, riverbeds, and gravel deposits worldwide.
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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