sedimentary
Limestone Pebble
Sedimentary Calcium Carbonate (CaCO3)
Hardness: 3 (Mohs scale); Color: Light grey to beige; Luster: Dull/Earthy; Structure: Fine-grained/Microcrystalline; Cleavage: None/Fragmental; Specific Gravity: 2.3–2.7
- Hardness
- 3 (Mohs scale)
- Color
- Light grey to beige
- Luster
- Dull/Earthy
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Physical properties
Hardness: 3 (Mohs scale); Color: Light grey to beige; Luster: Dull/Earthy; Structure: Fine-grained/Microcrystalline; Cleavage: None/Fragmental; Specific Gravity: 2.3–2.7
Formation & geological history
Formed in marine environments through the accumulation of shell, coral, and algal debris or chemical precipitation. The coordinates provided (Antalya region, Turkey) are rich in Mesozoic and Cenozoic limestone formations, consistent with this water-worn beach pebble.
Uses & applications
Limestone is extensively used in construction, cement manufacturing, agriculture (soil conditioning), and as an industrial raw material. This specific specimen is a decorative or souvenir pebble.
Geological facts
Limestone makes up about 10% of the total volume of all sedimentary rocks on Earth. This pebble's rounded shape is the result of mechanical weathering from wave action or river transport.
Field identification & locations
Identify in the field by its softness (can be scratched by a steel nail) and positive reaction (fizzing) to dilute hydrochloric acid or strong vinegar. Extremely common along the Mediterranean coast of Turkey.
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