Help with geodized fossil ID, please?

[DirtyHarry]

Hi all, I found online the following fossil. The finder claims  it to be an egg, which I really doubt, although I am no expert. 

What can it possible be?? Any suggestions are greatly appreciated!! Find location is south america, sorry for the lack of further details!

Best!

 

[DirtyHarry]

I tried to write "Geodized" on the title but it turned out awfully wrong....... 

[grandpa]

Looks like a quartz geode with some agate layer on the outer layer.  NOT an egg; but a nice geode.

[Fossildude19]

Beekite rings on a geode! 

Nice.  

[Fossildude19]

1 hour ago, DirtyHarry said:

I tried to write "Geodized" on the title but it turned out awfully wrong....... 

I fixed it for you.  

[FossilNerd]

The beekite rings were the first thing that stood out to me as well. Very cool! I've never seen beekite on a geode. 

 

I don't think this is a fossil, and it is definitely not an egg. The beekite on the outer layer would give it a more organic appearance to the untrained eye, but I think this is strictly geological. It is still an awesome find and worthy of a spot on the "cool rock shelf"!

[DirtyHarry]

Thanks a lot to everyone for your help and your knowledge!!! 

[Sagebrush Steve]

19 hours ago, Fossildude19 said:

Beekite rings on a geode! 

Nice.  

I know next to nothing about Beekite but from what I have read, it is formed when silica replaces organic material from a fossil.  Is there a way for beekite to form without any source organic material?  Or could you consider this technically to have some fossil material on it?

[abyssunder]

Pictures are a little bit blurry, but the Beekite forming the pattern of rings might be evident. 

[Ludwigia]

47 minutes ago, Sagebrush Steve said:

I know next to nothing about Beekite but from what I have read, it is formed when silica replaces organic material from a fossil.  Is there a way for beekite to form without any source organic material?  Or could you consider this technically to have some fossil material on it?

You've got a point there. Perhaps this is a geodized sponge? It would be helpful to know its stratigraphic position.

[abyssunder]

1 hour ago, Sagebrush Steve said:

I know next to nothing about Beekite but from what I have read, it is formed when silica replaces organic material from a fossil.  Is there a way for beekite to form without any source organic material?  Or could you consider this technically to have some fossil material on it?

Beekite can form "as a replacement of carbonate rock clasts, and shows no evidence of organic origin" - (McBride, 1988). 

https://www.researchgate.net/publication/240656187_The_occurrence_and_significance_of_beekite_in_Paleocene_alluvial-fan_deposits_in_central_Anatolia_Turke