Lake Superior Mysteries

[Oldnrth]

Was hunting along Lake Superior for agates and found these two, any idea what they could be?? Interesting patterns on them, larger one is about the size of a bowling ball.

 

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[gtsatohms]

These kind of look like the bryozoan fossils I used to find in Michigan when I was a kid.

 

[Oldnrth]

These kind of look like the bryozoan fossils I used to find in Michigan when I was a kid.

I wondered if that might be the case, do you think they’re worth picking??

 

[ToddsPoint]

It looks like a type of porphyry that is called Chinese writing stone. Gary

 

[gtsatohms]

Maybe just a few samples, if they’re good. The matrix is limestone and is fairly soft if I recall.