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Is this fossilized wood?


nicholasakl

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Welcome to TFF from Austria!

 

I don´t think that this is fossil wood.

 

From the outside, I thought some sort of gneiss, but from the polished surface, it looks more like travertine, sinter or even some kind of stromatolite or "layered sponge".

 

What is it composed of? Quartz-based, Calcium-carbonate based or even a mixture of both?

 

Would you like to provide some detailed still pics of the polished surface? Thank you!

 

Franz Bernhard

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A few still photos of the dry specimen are much easier for me to identify, but I agree that it does not look like wood. 

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I believe it is quartz what we see in the outside picture. I don't know rocks that mucho so that is about as much as I can tell.

16845850740873667463125337132717.jpg

1684585096308919495707995854462.jpg

1684585148718554612194951609909.jpg

16845851686235886664383100867495.jpg

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I can see a suggestion of wood grain, but I think this is highly metamorphosed rock. 

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Thank you very much for the additional pics!

 

Last pic makes it clear for me: Gneiss!

Fits with the general occurrence of metamorphic rocks there.

 

Btw, did you find any jade in that area?

Motagua Valley, Guatemala (mindat.org)

 

Franz Bernhard

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