Is this an Agate? Need your rock expertise...thank you!

[rockcrazy]

This was either found in Northern Lake Michigan or Southern Lake Superior. We are thinking it is some kind of Agate. What is your thoughts. Thanks for looking.

 

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[Jim in Idaho]

Looks to me like some sort of sedimentary rock...note the layering. An agate is simply mostly clear chalcedony quartz, with inclusions. Chalcedony quartz is made up of micro crystals, compared to regular quartz. That makes it slightly heavier, and harder.
Jim

 

[Bajahunter]

Agree it is sedimentary.
Some where near Pictured Rocks National Lakeshore?

 

[rockcrazy]

Thank you Jim!

 

[rockcrazy]

Bajahunter, I think I found this at Whitefish point.