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Goniatite mechanical and mechanical prep

Manticocerasman

By Manticocerasman
in Fossil Preparation

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Manticocerasman Regular Member

Manticocerasman

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On a recent fieldtrip I found a verry large and promising looking goniatite.

The center of the specimen was covered in claystone.

I tried a combination of mechanical prep with air scribe and treatment with potassium hydroxide.

Removing matrix as close to the fossil as possible and then treating it with potassium hydroxide.

I repeated this process a few times until I managed to clear out the whole center of the fossil.

 

before and after pictures:

Crickites sp.

Frasnian ( Late Devonian)

Belgium

 

IMG_7827.thumb.JPG.00db5eafbe43c6eb6631450e9faed7f1.JPGIMG_7828.thumb.JPG.e2a91c08cea906e4ef3772957fab3d11.JPGIMG_7971.thumb.JPG.be82c5f17ed7e3efaaaf936df6f8f596.JPGIMG_7974.thumb.JPG.9c707f485c9041af9e56a8f30d51398c.JPGIMG_7975.thumb.JPG.223fa55be0584eb0b05dc0d0d232a97c.JPG

 

  • Enjoyed 10

growing old is mandatory but growing up is optional.

 

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FossilNerd Regular Member

FossilNerd

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Excellent results!:ammonite01:

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The good thing about science is that it's true whether or not you believe in it.  -Neil deGrasse Tyson

 

Everyone you will ever meet knows something you don't. -Bill Nye (The Science Guy)

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FossilDAWG Regular Member

FossilDAWG

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Well didn't that turn out sweet!  :wub: :wub::wub:

It's interesting that goniatites get to be so large in your area.  Here in North America they are uniformly much smaller, and less diverse.

 

Don

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Manticocerasman Regular Member

Manticocerasman

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9 minutes ago, FossilDAWG said:

Well didn't that turn out sweet!  :wub: :wub::wub:

It's interesting that goniatites get to be so large in your area.  Here in North America they are uniformly much smaller, and less diverse.

 

Don

Thx,

 

The largest ones we have found here are over 40cm in diameter. All those big ones are from the same genus: Crickites sp.

Specimens from the same size and genus are also found in Morocco.

 

growing old is mandatory but growing up is optional.

 

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Top Trilo Regular Member

Top Trilo

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Great work! maybe FOTM? Don't know what day would be better, finding it, or seeing it finally prepped

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IsaacTheFossilMan Regular Member

IsaacTheFossilMan

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Woah, awesome prep job!

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