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ashcraft

Pseudofossil?

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ashcraft

Any ideas?  It is made of a black non-magnetic iron mineral.  I was thinking a cast of a septarian nodule........

20171101_140614.jpg

20171101_140603.jpg

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Herb

looks like a marcasite nodule

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ynot
41 minutes ago, ashcraft said:

I was thinking a cast of a septarian nodule

A septarian nodule is a mineralized mud ball that cracked and the voids were filled with other minerals. You can not have a cast of one of them.

 

I agree with an iron oxide concretion.

But the pictures are a bit blurry which makes it hard to be sure.

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ashcraft
10 hours ago, ynot said:

A septarian nodule is a mineralized mud ball that cracked and the voids were filled with other minerals. You can not have a cast of one of them.

 

I agree with an iron oxide concretion.

But the pictures are a bit blurry which makes it hard to be sure.

 

You can have a cast of anything.  If the nodule was covered with another material, and then through chemical action the original material is replaced, viola-a cast.  Is it likely to happen?  No, but this is an unusual specimen.  The symmetry on multiple axes wants me to say organic.........but my analytical part is saying mineral.........I am so confused...........

 

Brent Ashcraft

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ashcraft

THAT'S IT!

 

Doing my best Lucy impression, blowing Linus over the piano.......youngsters won't understand

 

Brent Ashcraft

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thelivingdead531

Terrible quality, I know, but the only one I could find of the actual moment. :D

image.jpeg

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