mineral
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale; Color: Tan to milky white with iron staining; Luster: Vitreous to waxy; Crystal structure: Trigonal; Cleavage: None (conchoidal fracture); SG: 2.65
- Hardness
- 7 on Mohs scale
- Color
- Tan to milky white with iron staining
- Luster
- Vitreous to waxy
Identified More mineral →
Explore Quartz Pebble in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 7 on Mohs scale; Color: Tan to milky white with iron staining; Luster: Vitreous to waxy; Crystal structure: Trigonal; Cleavage: None (conchoidal fracture); SG: 2.65
Formation & geological history
Formed from hydrothermal veins or as a primary constituent of igneous rocks. This specimen is water-worn or weathered, likely found in a riverbed or garden aggregate.
Uses & applications
Used in glass manufacturing, construction as a base material, landscaping, and as a common source for crushed stone.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. It is chemically very stable, which is why it often remains as pebbles after other minerals have weathered away.
Field identification & locations
Identify by its hardness (it will scratch glass) and lack of cleavage. Commonly found in gravel pits, riverbeds, and beaches worldwide.
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