fossil
Fossilized Shark Tooth
Elasmobranchii gen. sp. indet. (Calcium Phosphate - Ca5(PO4)3(OH,F,Cl))
Hardness: 3.5-5 on Mohs scale; Color: Dark grey to blackish brown; Luster: Dull to sub-vitreous; Structure: Organic osteodentine/enameloid; Specific Gravity: ~3.0
- Hardness
- 3
- Color
- Dark grey to blackish brown
- Luster
- Dull to sub-vitreous
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Physical properties
Hardness: 3.5-5 on Mohs scale; Color: Dark grey to blackish brown; Luster: Dull to sub-vitreous; Structure: Organic osteodentine/enameloid; Specific Gravity: ~3.0
Formation & geological history
Formed through permineralization of ancient shark teeth in marine environments, where minerals like phosphate, iron, and silica replace organic material over millions of years (typically Cretaceous to Neogene periods).
Uses & applications
Popular as collector specimens, educational displays, and incorporated into casual or wire-wrapped jewelry.
Geological facts
Shark teeth are among the most abundant fossils in the world because sharks shed thousands of teeth during their lifetime, and the enamel-like outer layer is highly resistant to decay.
Field identification & locations
Identify by its characteristic blade-like shape, smooth polished outer face, dark mineralization, and porous root area. Commonly found along coastal beaches, riverbeds, and phosphate mines in regions like Florida, the Carolinas, and Morocco.
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