mineral
Quartz pebble
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, white or translucent color, vitreous luster, trigonal crystal system, and conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, white or translucent color, vitreous luster, trigonal crystal system, and conchoidal fracture.
Formation & geological history
Formed through the crystallization of silica-rich solutions or cooling magmas, often weathered from pegmatites or hydrothermal veins into durable pebbles.
Uses & applications
Used in glassmaking, abrasives, electronics, and occasionally as tumbled decorative stones or low-cost jewelry.
Geological facts
Quartz is one of the most abundant and durable minerals in Earth's continental crust, highly resistant to both chemical and mechanical weathering.
Field identification & locations
Easily identified by its hardness of 7 which easily scratches glass and its distinct conchoidal fracture. Found worldwide in streams, beaches, and various rock formations.
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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