sedimentary
Pebble / Gravel Fragment
Clastic Rock Fragment
AI-generated identification · may be incorrectHardness: variable (3-7 Mohs), Color: brownish-grey, Luster: dull to earthy, Texture: fine-grained, irregular shape
- Luster
- dull to earthy, Texture: fine-grained, irregular shape
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Physical properties
Hardness: variable (3-7 Mohs), Color: brownish-grey, Luster: dull to earthy, Texture: fine-grained, irregular shape
Formation & geological history
Formed through the weathering, erosion, and mechanical breakdown of larger pre-existing rocks, often rounded or shaped by transport via water or wind.
Uses & applications
Commonly used in construction aggregate, land-scaping, road sub-base, or general fill material.
Geological facts
Small pebbles like this make up the vast majority of gravel deposits worldwide and are key components in stream and beach environments.
Field identification & locations
Identified by its small size, sub-angular to rounded shape, and earthy texture. Commonly found in riverbeds, soil, and gravel paths.
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