Rock Identifier
Shark Tooth Fossil (Elasmobranchii dentition (fossilized)) — fossil
fossil

Shark Tooth Fossil

Elasmobranchii dentition (fossilized)

Hardness: Approx 5 on Mohs scale; Color: Cream, tan, or white (depending on mineral replacement); Luster: Vitreous to dull; Structure: Sharp, tapering point with longitudinal striations; Composition: Calcium phosphate (apatite).

Hardness
Approx 5 on Mohs scale
Color
Cream, tan, or white (depending on mineral replacement)
Luster
Vitreous to dull
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Physical properties

Hardness: Approx 5 on Mohs scale; Color: Cream, tan, or white (depending on mineral replacement); Luster: Vitreous to dull; Structure: Sharp, tapering point with longitudinal striations; Composition: Calcium phosphate (apatite).

Formation & geological history

Formed through permineralization over millions of years. This specimen likely dates from the Miocene to Pleistocene epochs, created when a shark tooth settles in sediment and minerals replace the organic matter.

Uses & applications

Primarily used as jewelry components (pendants), educational specimens, and items for hobbyist collectors.

Geological facts

Sharks can lose thousands of teeth in a lifetime. Unlike bone, shark teeth fossilize easily because of their high mineral content, while their cartilage skeletons rarely survive as fossils.

Field identification & locations

Identify by looking for sharp, triangular or needle-like shapes with a distinct root area. Commonly found on beaches or in riverbeds in coastal regions like Florida and the Carolinas.