sedimentary
Sedimentary Rock (Limestone or Siltstone pebble)
Sedimentary rock fragment
Hardness varies between 3 to 4 on Mohs scale depending on exact mineral composition (carbonate vs quartz-rich); Color is greyish-brown; Luster is dull or earthy; Fine-grained structure; No distinct crystal cleavage visible due to weathering.
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Physical properties
Hardness varies between 3 to 4 on Mohs scale depending on exact mineral composition (carbonate vs quartz-rich); Color is greyish-brown; Luster is dull or earthy; Fine-grained structure; No distinct crystal cleavage visible due to weathering.
Formation & geological history
Formed through the accumulation, compaction, and cementation of mineral and organic particles in aquatic environments over millions of years.
Uses & applications
Commonly used for landscape aggregate, road construction, or as general fill material when found in larger quantities.
Geological facts
Small weathered rock fragments like this are typically rounded by water transport in rivers or streams over long distances.
Field identification & locations
Found worldwide in riverbeds, beaches, and glacial deposits. Identify by its weathered, rounded shape and fine-grained texture.
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