sedimentary
Sandstone Pebble
Sedimentary Rock (Quartzose Sandstone)
Hardness: 6-7 on Mohs scale; Color: Grayish-brown; Luster: Dull to earthy; Crystal structure: Clastic (composed of cemented mineral particles); Cleavage: None; Specific Gravity: 2.2-2.8
- Hardness
- 6-7 on Mohs scale
- Color
- Grayish-brown
- Luster
- Dull to earthy
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Physical properties
Hardness: 6-7 on Mohs scale; Color: Grayish-brown; Luster: Dull to earthy; Crystal structure: Clastic (composed of cemented mineral particles); Cleavage: None; Specific Gravity: 2.2-2.8
Formation & geological history
Formed from the accumulation, compaction, and cementation of mineral particles or rock fragments, typically in marine, river, or desert environments over millions of years.
Uses & applications
Used in construction, landscaping, as decorative gravel, and historically for building blocks and grindstones.
Geological facts
Sandstone is one of the most common types of sedimentary rock found on Earth, often preserving ancient environmental conditions through its cross-bedding.
Field identification & locations
Found worldwide in riverbeds, beaches, and sedimentary rock formations. Identified by its gritty texture resembling sandpaper.
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