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tgtbt

a real igneous fossil?

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tgtbt

Greetings  Fossil Forum

 

We are here because frankly we really do  not know where else to start!

 

Some 50 years ago, while on a semi tropical island...

-a  somewhat recent (surprisingly thin) lava flow that went across  some very shallow water, ran over a large shell.

-The lava vaporized the upper part creating an bubble that later broke open to reveal what you see  in the photo:

-the lower part being preserved somehow with parts of the original shell converted to Basalt,

-the rest virgin with sand and small local shells still attached., no Lie!

-We are lifelong  collectors and have  never even heard of something like this.

-Here is a  photo to get  started; we have much more info.

We will start a FaceBook and Youtube bit if needed.

But would rather goto the  collectors on your site to start as we need some advise and wisdom about such a find.

Please contact through this forum

Thank You

 

 

 

tgtgt Igneous fossil copyrighted

tgtbt

 

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GeschWhat

Can we see a photo of the actual stone/fossil?

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PFOOLEY

@tgtbt you can add more photos in the reply box below.

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Tidgy's Dad

Welcome to the forum! :)

I too am eager to see the specimen! 

 

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Rockwood

Scorching !

But not technically a fossil.

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abyssunder

For me looks to be a fossil gastropod remnant, revealing the internal morphology.  columella

 

FOSSIL_0032-1.jpg.04da9bd55c19788c722bb3dd1a80536d.thumb.jpg.be38816aeb289050452848a20280a003.jpgCharonia_shell.thumb.jpg.a6fe3ec62d579eba18ce722fcd964f31.jpg

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Ludwigia

I think Rockwood means it's not technically a fossil since it was created by a recent lava flow. I have heard of such occurences, but I'm afraid I can't give you any concrete information. Maybe one of our profis can help you further.

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piranha
On 1/3/2018 at 4:29 PM, Ludwigia said:

...I have heard of such occurences, but I'm afraid I can't give you any concrete information. Maybe one of our profis can help you further.

 

 

IMG.jpg.938afc67c9856515d24ef5d972fa6237.jpg Volcanic Fossil Rhinoceros! IMG1.jpg.1b7627366eba65045282f03ec92417ee.jpg

 

Chappell, W.M., Durham, J.W., & Savage, D.E. (1951)

Mold of a Rhinoceros in basalt, Lower Grand Coulee, Washington.

Geological Society of America Bulletin, 62(8):907-918

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Rockwood
10 hours ago, Ludwigia said:

I think Rockwood means it's not technically a fossil since it was created by a recent lava flow.

That was my point. It is admittedly a dangerous assumption though.

It's difficult to tell for certain whether this is an internal cast or a hybrid body/basalt replacement. In either case a certain amount of matrix must have been eroded. It could well be a fossil.

At the very least it is an interesting example of a process.  

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