Is this a pottery shard?

[relicdigger3]

Hey guys, I found this piece near a spot where I found an arrowhead. It seems like stone but it has fine edges. Any ideas?

 

[pepperj]

Looks like a piece of white marble. The smooth side that is.

 

[unclemac]

it is not NA

 

[Treasure_Hunter]

Sorry, not native American.

 

[Older The Better]

It is odd, but not like any pottery I’ve come across, wondering if it’s not the result of some fossil imprint.