mineral
Quartz Pebble
Silicon Dioxide (SiO2)
Hardness: 7 on the Mohs scale. Color: White, milky, or off-white. Luster: Vitreous to greasy. Crystal structure: Trigonal. Cleavage: None, exhibits conchoidal fracture. Specific gravity: 2.65.
- Hardness
- 7 on the Mohs scale
- Color
- White, milky, or off-white
- 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 on the Mohs scale. Color: White, milky, or off-white. Luster: Vitreous to greasy. Crystal structure: Trigonal. Cleavage: None, exhibits conchoidal fracture. Specific gravity: 2.65.
Formation & geological history
Formed through the crystallization of silica-rich solutions or cooling magma, subsequently weathered, eroded, and rounded by water transport in rivers or beaches over thousands to millions of years.
Uses & applications
Used in landscaping, decorative stone, abrasive manufacturing, glass production, and occasionally lapidary work.
Geological facts
Quartz is one of the most abundant and durable minerals in the Earth's continental crust, highly resistant to both chemical and physical weathering.
Field identification & locations
Easily identified by its high hardness (scratches glass), lack of cleavage, and resistance to weathering. Found worldwide in stream beds, beaches, and sedimentary deposits.
More like this
Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Soil with Mineral Detritus and Quartz Fragments
Regolith / Silicate Mineral Aggregate
sedimentary
Limonite / Goethite (Iron Ore Mineral nodule)
FeO(OH)·nH2O / FeO(OH)
mineral
Septarian Pebble
Septarian nodule / Concretion
sedimentary
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Schist
Schist
Metamorphic