Actinocrinites? Mineral?

[Badia]

Hi!

 

I always post specimens that may be just minerals... which are the real difficult ones for me to identify. I would like to ask you what do you think about this one. It was found near the other two specimens I posted before, one of them seem to be a baryte nodule and the other one we still do not know for sure. It was found in Santorcaz, NE Madrid province, Spain, in a site where miocene fossils have been found, and where we can still find many limestones which originated in an old lake. I think this may be... only may be... part of an actinocrinites called "calyx" (?). Thank you all! 

 

 

[Rockwood]

11 minutes ago, Badia said:

where we can still find many limestones which originated in an old lake.

Crinoids would not naturally have been found in fresh water.

[Fossildude19]

And this doesn't look like a fossil of any kind, to me.   

[Ludwigia]

And it's certainly not a crinoid calyx.

[abyssunder]

Unfortunately, it doesn't resemble the crinoid morphology and the temporal range exceeds the limit for Actinocrinites, not saying that a lacustrine environment would not be proper for that, as it was stated.
Can we see the opposed side of it?

[Innocentx]

@Badia. Have you looked at this under magnification? It's possible there are pieces of fossils in it.

I too would like to see other side.

 

 

[Badia]

Hi! Thank you so much everyone! I did cut-open the rock. In case of doubt, I was advised once to do so. There was nothing inside, no pattern, nothing! I am afraid it is just a beautiful rock! I can still take some pictures tomorrow and post them. Let me know...

 

 

[ynot]

1 hour ago, Badia said:

I can still take some pictures tomorrow and post them. Let me know...

Yes, please do post more pictures.

[Badia]

Thank you for your interest, ynot! Here you can find a few more pictures of the same specimen. Yes, I did take a look at it with a magnifier and, in my opinion, there is nothing indicating micro-fossils, etc. If you take a look at the inside, it does not look like a septarian either, does it? Please let me know your opinion. 

[ynot]

Looks like a chert nodule.

I do not see any fossil there.

[Badia]

Thank you anyway!