Don’t have a clue!

[cds7189]

Found in a creek bed in limestone. Noticed it because of the rust like stains on the limestone.

 

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[Brian T. Booth]

<img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=818966"/><img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=818967"/><img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=818968"/>

Found in a creek bed in limestone. Noticed it because of the rust like stains on the limestone.

I think what you have is either pyrite or marcasite. Unique piece

 

[Alex Burke]

It looks like bigfoot's lead footprint on top right, I want to say its galena, but I think more likely it could be marcasite but I couldn't find a comparable pic. That's just my two cents, I'm not a professional. Oops didn't see Mr. Booth's post still my guesses though lol feel better about marcasite now...

 

[Eu_citzen]

Brian is right. They can form roundish shapes, better known under the trade name "Pyrite sun".

 

[cds7189]

Thanks guys! I do really appreciate your help. This one was mostly broken from a tree falling on it and was all in a round ball shape with all the shards pointing in to the center. I think I have found two more in the limestone but not sure how to remove them without damaging them.

Thanks again [Why I love this site]