help identify stones

I broke one to see the sandstone center, but they appear to be solid hematite. What are they, if not Moqui marbles. Thank you. Martian blueberries? 8-)

I dug these up in Sweetwater, TX.

I recently had my backyard torn up and regraded in Allentown PA - they went 30” down in some spots. It used to be a old wooded area 60 years ago and just moss and grab grass since. Anyway the soil here is dense red PA clay - 12-14 inch thick red soil everywhere and I’m told shale below that. I...