Need help ID

[Valerie44]

Hello, thank you in advance for any help identifying. I found these on the cherokee lake bed in Northeast Tennessee Hawkins county they are extremely hard and after washing don't change in appearance. Are they fossils? 

[JamieLynn]

while I am not familiar with that area and what might be found there, I do not see anything fossil specifically. Typically fossils will have some kind of symmetry or obvious ornamentation that says they were once a living creature. This seems more geological to me. Others may weigh in with better knowledge, but it looks more like geologic iron deposition. 

[TqB]

Maybe oncolites or similar, or maybe just concretions. Closer photos might help.

[Valerie44]

Thank you both very much