mineral
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on the Mohs scale, Color: White to translucent, Luster: Vitreous to greasy, Crystal Structure: Trigonal, Cleavage: None (conchoidal fracture), Specific Gravity: 2.65
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Physical properties
Hardness: 7 on the Mohs scale, Color: White to translucent, Luster: Vitreous to greasy, Crystal Structure: Trigonal, Cleavage: None (conchoidal fracture), Specific Gravity: 2.65
Formation & geological history
Formed through the weathering and water-transport of quartz-rich rocks (such as granite or quartzite) in rivers, beaches, or glacial environments.
Uses & applications
Used in landscaping, aggregate, glassmaking, and occasionally as a tumbling or decorative stone.
Geological facts
Quartz is one of the most abundant minerals in the Earth's continental crust and is exceptionally resistant to weathering, which is why quartz pebbles are extremely common in riverbeds and on beaches.
Field identification & locations
Can be identified by its high hardness (scratches glass), lack of cleavage, and resistance to acid. Found worldwide in nearly all geological environments.
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