sedimentary
Sandstone Pebble
Sedimentary Rock (Quartzose Sandstone)
Hardness: 6 to 7 (Mohs scale), Color: Grayish-brown, Luster: Dull to earthy, Crystal Structure: Clastic with quartz grains, Cleavage: None, Specific Gravity: 2.2 to 2.8
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Physical properties
Hardness: 6 to 7 (Mohs scale), Color: Grayish-brown, Luster: Dull to earthy, Crystal Structure: Clastic with quartz grains, Cleavage: None, Specific Gravity: 2.2 to 2.8
Formation & geological history
Formed from the accumulation, compaction, and cementation of mineral particles or rock fragments, primarily quartz sand, deposited by water, wind, or ice over millions of years.
Uses & applications
Used in construction, decorative landscaping, garden stepping stones, and as a natural abrasive or whetstone.
Geological facts
Sandstone is one of the most common sedimentary rocks on Earth, often preserving ancient environmental conditions such as desert dunes or ancient riverbeds.
Field identification & locations
Found widely in riverbeds, beaches, and sedimentary basins worldwide. Identified by its gritty texture and visible sand grains.
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