mineral
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically white, yellow, or translucent in color, vitreous to greasy luster, trigonal crystal system, no cleavage with conchoidal fracture, and specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, typically white, yellow, or translucent in color, vitreous to greasy luster, trigonal crystal system, no cleavage with conchoidal fracture, and specific gravity of 2.65.
Formation & geological history
Formed through the accumulation and weathering of silicate-rich rocks over millions of years, often smoothed by water action in rivers, beaches, or glacial environments.
Uses & applications
Used in landscaping, decorative gravel, polished display stones, and historically for stone tools.
Geological facts
Quartz is one of the most abundant minerals on Earth's continental crust and is exceptionally resistant to weathering.
Field identification & locations
Easily identified by its high hardness (scratches glass) and conchoidal fracture. Common globally 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