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Not Sure What This Is (Lake Michigan)


ydok

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I found this at Lake Michigan, and I'm not sure if it's something substantial or just geological. It is about 3 in/8cm long. The white patterning is slightly raised/textured and wraps around the circumference of the stone. 

Any help is appreciated. Thanks!

448460009_443081261960696_1293076177169632501_n.jpg

448909611_1037511104553838_234444020555094207_n.jpg

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The first photo shows what could be something fossil related. Bryozoan? Coral?? 

Could just be a mineral crust, though.

Looks like it has worn off of the rock, whatever it is.

 

448460009_443081261960696_1293076177169632501_n.jpg.1c1870f510de97ae3c8b998995dc4974.jpg

 

 

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This feels more like an eroded metamorphic rock than a fossil to me. Not confident though.

  • I found this Informative 1
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I agree with geologic and not biologic. No fossil.

 

 

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Could those grooves be critter burrows in carbonate hardground?  This chunk broke off and was eroded in the lake to its present form?

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The "lines" look more like sedimentary strata than fossils to me -- but I could be wrong. The first photo is what causes me to be not sure.

 

 

 

Edited by Mark Kmiecik
typo

 

 

Mark.

 

Fossil hunting is easy -- they don't run away when you shoot at them!

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4 hours ago, Odd Rocks said:

Could those grooves be critter burrows in carbonate hardground?  This chunk broke off and was eroded in the lake to its present form?

No, yes.

 

 

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