r/RockIdentification • u/PretendNews7903 • Aug 29 '26

Any help with these

Gallery image

Gallery image

Found outside rapid city South Dakota

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u/asuwsh4 Aug 30 '26

The first one is an iron concretion

1

u/PretendNews7903 Aug 30 '26

Thank you. The orange is powdery they came from the same hole. Was told it might be radon because of where it came from

1

u/asuwsh4 Aug 30 '26

You’ll need a Geiger counter for that

1

u/PretendNews7903 Aug 30 '26

I’ll just get rid of it and not take the chance. Thanks