Moqui Marbles, but. Are they?

[Kimdenise]

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?

 

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[vpnavy]

I broke one to see the sandstone center, but they appear to be solid hematite. What are they...

I moved ya from HELP! over to WHAT IS IT? for more exposure.

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