mineral
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale; Color: White to milky translucent with green inclusions; Luster: Vitreous; Crystal Structure: Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- White to milky translucent with green inclusions
- Luster
- Vitreous
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Physical properties
Hardness: 7 on Mohs scale; Color: White to milky translucent with green inclusions; Luster: Vitreous; Crystal Structure: Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
Formation & geological history
Formed through hydrothermal processes in veins or from the cooling of silica-rich magma; subsequently weathered and water-worn into a pebble shape over millions of years
Uses & applications
Commonly used in glassmaking, electronics (piezoelectric properties), abrasives, and as decorative gravel or river rock
Geological facts
Quartz is the most abundant and stable mineral on Earth's continental crust. The green inclusion seen here is likely chlorite or epidote trapped during the mineral's growth
Field identification & locations
Identify in the field by its ability to scratch glass and its lack of cleavage. Found globally in riverbeds, beaches, and mountain outcrops
More like this
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