Please help identify geologic or biologic

[Helen’s rocks]

Hello everyone, Please help me identify if this is a possible plant or mineral.  First time posting, thank you for your help.

Edited November 26, 2018 by Helen’s rocks
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[daves64]

UUmmm.. not to be picky or anything, but we sort of need to see a picture of the item in question.. 

[jpc]

Just now, daves64 said:

UUmmm.. not to be picky or anything, but we sort of need to see a picture of the item in question.. 

Picky, picky, picky.  

[Innocentx]

Nice photos, @Helen’s rocks. If you could post one photo of side one with size around 3mb so we can zoom in, it would really help. So far these look like possible trace fossils.

 

Welcome to the forum from Kansas!

[Helen’s rocks]

[caldigger]

Looks Dendritic to me.

[ynot]

Agree with Caldigger, looks mineral.

[Innocentx]

@Helen’s rocks. Unfortunately I was unable to view your last photo and saw this instead:

 

 

Were others able to view it?

 

I did notice some circular patterns in your first photo. @caldigger I'm curious, is that normal for dendritic growth?

 

 

 

 

 

 

 

[FranzBernhard]

To me, it looks like that it has some relief. My gut feeling is, that this is a fracture surface with a thin, partial mineral coating. I think, there is a special name for such features on a fracture surface. Plume structure?? Hackle surface?? But I can be totaly wrong, of course...

Franz Bernhard

[caldigger]

That's how Dendrites form. Manganese will seep into minute fissures in the rock and spread in fracture directions. 

[abyssunder]

A lateral view of the specimen is needed.
I see voids in the exposed lateral view, but the picture is too blurry to make a more precise idea.