mineral
Quartz pebble
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, typically white or translucent, vitreous luster, lacks cleavage, conchoidal fracture.
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Physical properties
Hardness of 7 on Mohs scale, typically white or translucent, vitreous luster, lacks cleavage, conchoidal fracture.
Formation & geological history
Forms in igneous, metamorphic, and sedimentary rocks; pebbles are smoothed by water action in streams or beaches.
Uses & applications
Used in glassmaking, electronics, construction materials, and lapidary arts.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust.
Field identification & locations
Identified by its hardness (scratches glass), lack of cleavage, and typical white or clear appearance. Found commonly in riverbeds and beaches.
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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