mineral
Quartz pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 (Mohs scale); Color: White/Tan; Luster: Vitreous to greasy; Crystal structure: Trigonal; Cleavage: None/Conchoidal fracture; Specific gravity: 2.65
- Hardness
- 7 (Mohs scale)
- Color
- White/Tan
- Luster
- Vitreous to greasy
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 (Mohs scale); Color: White/Tan; Luster: Vitreous to greasy; Crystal structure: Trigonal; Cleavage: None/Conchoidal fracture; Specific gravity: 2.65
Formation & geological history
Formed from the crystallization of silica-rich magma or from hydrothermal solutions. This specimen appears to be a water-worn river or beach pebble formed via erosion of primary quartz veins.
Uses & applications
Industrial uses include glassmaking, abrasives, and electronics. Small pebbles of this quality are used for landscaping or decorative gravel.
Geological facts
Quartz is one of the most abundant minerals in the Earth's crust. It is chemically stable at the Earth's surface, which is why it often remains as small pebbles after other minerals have weathered away.
Field identification & locations
Identify in the field by its hardness (will scratch glass) and lack of cleavage. Often found in stream beds, gravel pits, 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