sedimentary
Sedimentary Pebble
Sedimentary Rock Fragment
Hardness varies between 3 and 7 on the Mohs scale depending on mineral content; gray to brownish color; dull luster; fine to medium-grained texture; no distinct cleavage.
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Physical properties
Hardness varies between 3 and 7 on the Mohs scale depending on mineral content; gray to brownish color; dull luster; fine to medium-grained texture; no distinct cleavage.
Formation & geological history
Formed through the accumulation, compaction, and cementation of mineral and rock fragments over geological timescales, often smoothed by water transport in riverbeds or coastal environments.
Uses & applications
Used primarily in landscaping, aggregate for construction, and as part of geological studies.
Geological facts
Water-worn pebbles like this are indicators of ancient or current river systems, showing significant transport and abrasion history.
Field identification & locations
Commonly found in riverbeds, glacial tills, and beaches. Field identification relies on observing rounded shapes and granular texture.
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