Any insight on this rock?

[RedHills]

Just curious

 

[Impact97]

Some kind of Chert maybe?

 

[Artfuldodger]

Maybe post a picture of those smaller pieces up close. Maybe the knappers can see if it has conchoidal fracturing. Those edges look really sharp on those two little pieces.

Maybe a better picture of the big piece in the background as well. You got my curiosity up as well!