sedimentary
Sandstone Pebble
Sandstone (Quartzose/Feldspathic Sandstone)
Hardness: 6-7 on Mohs scale. Color: tan to yellowish-brown. Luster: dull to earthy. Structure: clastic texture composed of sand-sized grains. Cleavage: none. Specific Gravity: 2.2-2.8.
- Hardness
- 6-7 on Mohs scale
- Color
- tan to yellowish-brown
- Luster
- dull to earthy
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Physical properties
Hardness: 6-7 on Mohs scale. Color: tan to yellowish-brown. Luster: dull to earthy. Structure: clastic texture composed of sand-sized grains. Cleavage: none. Specific Gravity: 2.2-2.8.
Formation & geological history
Formed by the compaction and cementation of mineral particles or rock fragments, usually predominantly composed of quartz and feldspar, deposited by water, wind, or ice over geological timescales.
Uses & applications
Commonly used in landscaping, road base, decorative pebble art, aquarium decor, and general construction aggregates.
Geological facts
River-worn sandstone pebbles derive their smooth, rounded shape from long-term hydraulic erosion in riverbeds, lakes, or coastal beach environments.
Field identification & locations
Look for a granular, sandpaper-like texture and rounded edges indicative of water transport. Found globally along stream beds, beaches, and sedimentary rock formations.
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