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davidduarte

Is this a fossil? From Guinea

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davidduarte

Dear friends,

 

I've met a very nice man that has kept a stone very well hidden as he thinks that it could have some value.

I don't understand what it is, but it came into my mind that it can be a fossil.

 

Can you help to indentify it?

 

Thank you very much.

 

Best regards,

David Duarte

IMG_20190104_115750.jpg

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davidduarte

Another photo...

IMG_20190104_115742.jpg

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davidduarte

Another one...

IMG_20190104_115735.jpg

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davidduarte

Another...

IMG_20190104_115723.jpg

Edited by davidduarte

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davidduarte

Almost finished...

IMG_20190104_115714.jpg

Edited by davidduarte

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davidduarte

And this is the base...

IMG_20190104_115700.jpg

Edited by davidduarte

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Al Tahan

I don’t really see anything that would scream a fossil. If it is a fossil it would be a stromatolite but I don’t think that’s what you have. It looks a lot like a concretion rich in iron. Almost has the look of the “banded iron formation”

Do you know where it is from?

 

Al

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Fossildude19

This looks non fossil to me. 

Mineral of some sort, I would guess.

@ynot

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Rockwood

It's easier for me to imagine this pattern precipitating from solution so I'm going with igneous on this one.

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davidduarte

I think you are right, it seems like iron that melted at the surface. I'll try to get some more details.

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ynot

Looks like an iron concretion to Me.

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Rockwood
3 minutes ago, ynot said:

Looks like an iron concretion to Me.

What causes the conflicting angles ? A slower form of crystallization ?

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ynot
2 minutes ago, Rockwood said:

What causes the conflicting angles ? A slower form of crystallization ?

Bedding planes and cross bedding of the parent rock.

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Rockwood
12 minutes ago, ynot said:

Bedding planes and cross bedding of the parent rock.

A chaotic sedimentation followed by a period of quiescence when the concretion formed ? 

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ynot
12 minutes ago, Rockwood said:

A chaotic sedimentation followed by a period of quiescence when the concretion formed ? 

That is My interpretation of this rock.:D

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Rockwood
14 minutes ago, ynot said:

That is My interpretation of this rock.:D

Probably better than mine.

The iron I've been working on this winter has only been cast for seventy years.

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abyssunder

conccrossbeds-58b5aba15f9b586046a6a7d4.jpg.c080251709b4eb4b4575af6f2d2320aa.jpg

concretion with crossbedding, Montana
 Photo courtesy Ken Turnbull, Denver, Colorado.

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Innocentx

Glass sponge?

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davidduarte

Thank you very much for your great help identifying the object.

 

Take care,

David Duarte

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