sedimentary
Fossilized Bone Chunk (likely Dinosaur or Large Mammal)
Permineralized Fossil Bone
AI-generated identification · may be incorrectHardness: 5-6 (Mohs), Color: brownish-purple to earthy tan, Luster: dull to earthy, Crystal structure: microcrystalline silica/quartz infiltration, Cleavage: none (irregular fracture), high specific gravity due to mineral replacement.
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Physical properties
Hardness: 5-6 (Mohs), Color: brownish-purple to earthy tan, Luster: dull to earthy, Crystal structure: microcrystalline silica/quartz infiltration, Cleavage: none (irregular fracture), high specific gravity due to mineral replacement.
Formation & geological history
Formed over millions of years through permineralization where minerals (like silica or iron) fill the pores of bone in sedimentary environments such as riverbeds or floodplains.
Uses & applications
Used for scientific study, museum displays, and private collections.
Geological facts
This specimen shows the characteristic honeycomb-like 'cancellous' or spongy bone structure in the cross-section, which is a key diagnostic feature of fossilized bone.
Field identification & locations
Identify in the field by looking for the porous cellular structure (looks like a sponge or honeycomb) on broken faces; it often feels heavier and colder than wood but stickier to the tongue due to porosity.
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