sedimentary
Sandstone Pebble
Arenite (SiO2 based)
Hardness: 6-7 Mohs; Color: Tan, beige, or light brown; Luster: Dull/Earthy; Structure: Clastic; Cleavage: None
- Hardness
- 6-7 Mohs
- Color
- Tan, beige, or light brown
- Luster
- Dull/Earthy
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Physical properties
Hardness: 6-7 Mohs; Color: Tan, beige, or light brown; Luster: Dull/Earthy; Structure: Clastic; Cleavage: None
Formation & geological history
Formed by the accumulation and lithification of sand-sized mineral grains or rock fragments over millions of years, typically in riverbeds or coastal environments.
Uses & applications
Commonly used as construction aggregate, decorative landscaping stone, and for educational geological collections.
Geological facts
Sandstone can be found in almost every colors, but tan and red are most common. It often preserves ripple marks or fossils from the ancient environments where it formed.
Field identification & locations
Identified by its gritty texture (feels like sandpaper) and visible sand grains. Commonly found in riverbeds, beaches, and desert outcrops.
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