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Central Ohio Limestone?


lzbones

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Hi! Thought I'd give this a shot: I found this piece as a kid, and have held on tight to it because it's always been my "cool rock I found all by myself". Decades later, my opinion hasn't changed. Found in a rural part southern-central Ohio. Decent weight for its size, would definitely hurt if someone threw it at ya.

 

My only query is that I have no idea what it is, as a super amateur mineral collector/enthusiast. Some strangers on the internet have pointed to it being limestone, but no guesses on what's imprinted on it (if anything). Would love to hear some opinions, or just for someone to flat out tell me it's been nothing special this whole time. :BigSmile: Happy almost New Years!

 

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2 minutes ago, Kane said:

Cross section of a rugose coral, possibly Devonian in age.

Had to image search it and wow, I'd definitely consider it a possibility. Thanks so much!

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Definitely a piece of rugose coral. There are quite a few that fit that structure but you'd need to know what beds it was from to narrow it down much. If Devonian, it could be something along the lines of the colonial Eridophyllum, as just one example.
 

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Tarquin

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15 hours ago, TqB said:

Definitely a piece of rugose coral. There are quite a few that fit that structure but you'd need to know what beds it was from to narrow it down much. If Devonian, it could be something along the lines of the colonial Eridophyllum, as just one example.

 

I'd never even heard of rugose coral until making this post, which just shows much I know. Delighted to have learned something new about one of my favorite childhood pieces. ^_^ Thanks!

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