What is it ?

trusty

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Dec 18, 2007
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Osceola County, Michigan
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I've had this "Rock" for several years & don/t even remember where I found it. I think it was on a Lake Michigan beach.

Will someone tell me what it is ?

Thanks for looking.
 

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Harry Pristis

Bronze Member
Feb 5, 2009
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Northcentral Florida
trusty said:
I've had this "Rock" for several years & don/t even remember where I found it. I think it was on a Lake Michigan beach.

Will someone tell me what it is ?

Thanks for looking.
It appears to be a colonial coral. Many chunks like this were carried by glaciers from Canada. It may be Silurian in age. Do an Internet search for PETOSKEY STONE.
 
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trusty

trusty

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Dec 18, 2007
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Osceola County, Michigan
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Thanks Harry.

I never thought of Petoskey Stone. I've never seen one this big.

Think I should polish it ?
 

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