Anyone know what this?

[Rose_34]

Hello!
Just curious to what this is? My girls and I found it yesterday. I plan on going back out today with them hopefully if it doesn't rain. I have been picking up some rocks too. My Sister said theirs doesn't pick up rocks so they must have some type of metal or something in them.
Thanks a bunch for all the answers.
Rose.

 

[tennessee digger]

It just looks like a small rock to me. Is it heavier than a rock? It could be a piece of lead also.

 

[Rose_34]

Hi,
Sorry for not answering back right away been busy lately. It is actually light weight. I have no clue what it is. Some type of Fossil maybe? But then again I'm new to Treasure Hunting too.
Thanks for answering back. Have a good rest of the weekend.

 

[Red James Cash]

kind of looks like brown pumice.But i never tried seeing if a md reacts to pumice.