fossil

Fossil Shark Tooth

Carcharodon carcharias (modern/recent) or similar Lamniform fossil

Hardness: 5 on Mohs scale; Color: Creamy white to pale tan; Luster: Vitreous to sub-glassy; Structure: Dense calcium phosphate (apatite); Shape: Triangular with a central ridge and pointed tip.

Hardness: 5 on Mohs scale
Color: Creamy white to pale tan
Luster: Vitreous to sub-glassy

Identified July 14, 2026More fossil →

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Physical properties

Hardness: 5 on Mohs scale; Color: Creamy white to pale tan; Luster: Vitreous to sub-glassy; Structure: Dense calcium phosphate (apatite); Shape: Triangular with a central ridge and pointed tip.

Formation & geological history

Formed through the process of permineralization or as a modern beach find; composed of hydroxyapatite. In fossils, organic matter is replaced by minerals over thousands to millions of years. This specimen appears very white, suggesting it may be relatively recent (Holocene) or from a high-calcium sediment environment.

Uses & applications

Primarily used for educational collections, jewelry (pendants), and as a popular souvenir for beachcombers and hobbyist collectors.

Geological facts

Sharks can lose tens of thousands of teeth in their lifetime. Unlike bone, which is hollow and porous, shark teeth are solid and dense, allowing them to survive long enough to fossilize. The white color indicates it likely hasn't spent enough time buried in mineral-rich sediments to absorb darker colors like black, gray, or orange found in older fossils.

Field identification & locations

Look for a triangular shape with a distinct root area (though roots are often broken, as seen here) and a sharp, enamel-like surface. Common on coastal beaches of the Atlantic and Gulf coasts of the USA, especially Florida.

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