Radioactive Fossils

[Laurie Taylor <laurie-taylor@uiowa.edu>]

Does anyone out there have any information or can you point me to any
reference material regarding fossils containing "naturally" occuring
radioactive material.  I am posting this for an archeaologist/curator who
is responsible for museum collections and has a concern about possible
exposure to staff and the general public.  Any help is greatly appreciated.

Thanks, 
Laurie Taylor
The University of Iowa
laurie-taylor@uiowa.edu
319/335-8532
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