Rock Identifier
Fossilized Bone (Permineralized Vertebrate Fossil) — sedimentary
sedimentary

Fossilized Bone

Permineralized Vertebrate Fossil

Hardness: 4-5 (Mohs scale), Color: tan, brown, or gray, Luster: dull to earthy, Crystal Structure: often retains cancellous/porous bone texture, Specific Gravity: 2.5-3.0

Identified More sedimentary

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Physical properties

Hardness: 4-5 (Mohs scale), Color: tan, brown, or gray, Luster: dull to earthy, Crystal Structure: often retains cancellous/porous bone texture, Specific Gravity: 2.5-3.0

Formation & geological history

Formed through permineralization where mineral-rich water fills the pores of organic remains, typically in fluvial or lacustrine sedimentary environments over millions of years.

Uses & applications

Scientific research, paleontological study, educational displays, and private collecting.

Geological facts

The fossilization process can preserve microscopic details of the bone structure, allowing paleontologists to study the growth rates and pathologies of extinct animals.

Field identification & locations

Identify by looking for a 'honeycomb' or porous structure at the cross-section (cancellous bone). Often found in eroding riverbanks or badlands areas.