sedimentary
Fossilized Tiger Shark Tooth
Galeocerdo cuvier (fossilized hydroxylapatite)
Hardness: 5 (enamel); Color: Gray to black due to permineralization; Luster: Vitreous to sub-metallic; Structure: Biogenic phosphate; Specific gravity: ~2.9-3.1
- Hardness
- 5 (enamel)
- Color
- Gray to black due to permineralization
- Luster
- Vitreous to sub-metallic
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Physical properties
Hardness: 5 (enamel); Color: Gray to black due to permineralization; Luster: Vitreous to sub-metallic; Structure: Biogenic phosphate; Specific gravity: ~2.9-3.1
Formation & geological history
Formed through permineralization where minerals like silica or phosphate replace the organic structure of the tooth within marine sedimentary layers. Dating typically from the Miocene to Pleistocene epochs.
Uses & applications
Highly valued for fossil collecting, educational displays, and sometimes used in unique jewelry pieces.
Geological facts
Tiger sharks are often called 'garbage cans of the ocean' because of their undiscriminating diet. Their teeth are uniquely designed with a sideways-point to saw through tough materials like turtle shells.
Field identification & locations
Identified by the distinct curved, serrated blade and wide root. Commonly found in coastal sedimentary deposits like the Peace River in Florida or the North Carolina coast. Collectors look for sharp serrations and intact roots.
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