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Is this Michigan rock a fossil


TheRocksWillShoutHisGlory

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TheRocksWillShoutHisGlory

I found this rock in Lake Michigan near traverse city.  It looked curious, is it a fossil?  Glacial scarring?  What made the bands?

IMG_0711(1).JPG

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TheRocksWillShoutHisGlory

If this was chlorastrolite i'd be quite happy with it, however it doesn't have any green pigment and the pattern isn't as "boxy"

 

 

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I've been looking at it since you posted it and have done a bit of searching but came up with nothing so far. I do get an organic vibe from it, but we all know how quickly that can change with good supporting evidence.

 

I'm thinking it's a bryozoan, but am not finding a good match. I'd like to see photos of the edges and the other side if possible.

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Looks like a partially dolomitized limestone, or maybe limestone with chert bands?

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Definitely not glacial scarring. Glacial scarring would disappear when a surface is polished, which this has been by sand and water.

 

Still haven't found anything similar.

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