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What is Fossil Bone Composition and Mineralization about?
Fossils are often heavier than modern bones because the pores and spaces in bones become filled with minerals from surrounding sediments during the fossilization process, not because bones literally turn to stone. The degree of mineralization depends on the deposition environment, not the age of the bone. For example, 20,000 year old Florida bones are heavily mineralized while 75 million year old Canadian dinosaur bones show less filling. Under optimal conditions, mineralization likely takes thousands of ye
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