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Remc

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Hello. Please help me with this ammonite.. I am a newbie with fossiles.. what is this spec of ammonite, how old and how much is worth etc...  thankyou

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Welcome to the Fossil Forum.

 

You have a large ammonite.  If you can provide some information about the age of the fossil, the geological formation or at least the approximate location where it was collected, that would help to narrow down the range of possibilities for a more precise identification.  Also please show a photo of the side of the specimen, as important features are often seen there.

 

As is stated at the heading to the Fossil ID section, we do not ever appraise value.  It is impossible to estimate value without having the actual specimen in hand, a photo simply does not convey the attributes of the specimen sufficiently.  More important, the Fossil Forum is an educational community of people who are passionate about fossils.  We are not a free appraisal service. 

 

Don

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Hi, could you show us photos of the Opening and the edge ? Like for ones of mines on the following photos :

 

Opening

IMG_0181.thumb.JPG.65ae779c0978b580301e3b8fbd7bfb4b.JPG

 

 

Edge

IMG_0044.thumb.JPG.a443ca80813f97d4012638d1d8645d7e.JPG

IMG_0533.thumb.JPG.87390d9dd43033205b35f61e369fa402.JPG

theme-celtique.png.bbc4d5765974b5daba0607d157eecfed.png.7c09081f292875c94595c562a862958c.png

"On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry)

"We only well see with the heart, the essential is invisible for the eyes."

 

In memory of Doren

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At least, it is as old as the end of the Cretaceous, but it could be oldier.

The only worth i give to my fossils depends on how much i like them, no matter if they are very old or more recent, common or rare, beautiful or ugly.

theme-celtique.png.bbc4d5765974b5daba0607d157eecfed.png.7c09081f292875c94595c562a862958c.png

"On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry)

"We only well see with the heart, the essential is invisible for the eyes."

 

In memory of Doren

photo-thumb-12286.jpg.878620deab804c0e4e53f3eab4625b4c.jpg

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Hopefully someone with experience with Moroccan or Madagascarian ammonites will recognize your specimen.  (I am assuming it came from one of those places as they are the source of the great majority of African ammonites.)  I don't know what you mean by "what is the best to do with this fossil"?  First, you posted the first photo only 6 hours ago.  There is no-one who is paid to watch this forum and provide an immediate identification.  People will read your post and offer suggestions when they happen to get time, which is to say when they are not at work, eating dinner, driving the kids to soccer practice, or all the other things people have to do besides reading an online forum.  Second, there is no "what is best".  It is your fossil, what do you want to do with it?  It is a very nice fossil, if it were mine I might try to see if I could expose the inner whorls a bit more (though I am not sure that will be possible), and I would display it with the rest of my collection.  Do you collect fossils yourself, or is this something you were given but don't have much interest in keeping?   

 

If you are patient, it is likely that someone will be able to offer a suggestion for the identification.

 

Don

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Thankyou Don. This is my first fossil, have it for a gift from a friend. I mean that i want to keep it but also do some esthetical work on it but i dont know how to...i see that is a lot of ways to get rid of stone around the fossil but dont know wich is the most appropriate for it..

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13 hours ago, Remc said:

Thankyou Don. This is my first fossil, have it for a gift from a friend. I mean that i want to keep it but also do some esthetical work on it but i dont know how to...i see that is a lot of ways to get rid of stone around the fossil but dont know wich is the most appropriate for it..

 

The ammonite appears to be a limestone mold with a sculpture which would fit any number of species, like Fifbrindacier says, from early Jurassic to late Cretaceous, whose innerwhorls are quite depressed. There appears to be a bit of excess matrix on the venter, and maybe there is some between the whorls spiraling into the center, although they appear to be either partially deformed or absent. You could try to remove that with fine chisels, but it would depend on the relationship of the hardness between matrix and mold. If the matrix is as hard as the mold, then the two are "married" and it may cause damage to the mold if you try to separate them, particularly as you move towards the center, where if you're not careful enough, you may end up punching a hole in the middle. The mold of the outer whorl between 6 and 8 o'clock is completely gone. A knowledge of the anatomy would help in order to know how the original form should look. Maybe the best you can do with that ammonite would be to give it a coat of beeswax finish and leave it at that.

 

Greetings from the Lake of Constance. Roger

http://www.steinkern.de/

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Since it is likely limestone, it would respond to acetic, carbonic and hydrochloric acids. The most readily available commercial type would be vinegar, which may vary in strength (conventional 5% as food additive, and 10% for cleaning purposes, for example). That being said, application of acid might actually damage what you have. You could apply a bit of weak acid, but it would take extreme care and supervision, and it is probably not a good idea. ;)

 

Without knowing the relative density of the mold to the matrix, and without having a more intimate understanding of the anatomy, your best bet would be to scope around for someone who specializes in fossil preparation. Otherwise, this fossil already looks quite nice without any further modification. :)

...How to Philosophize with a Hammer

 

 

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It looks a bit like this one, maybe, which is from Madagascar, 48.5cm:

 

IMG_0158.JPG.1c3fb246e102a32179c0d47064daf53b.thumb.JPG.56cacd52b4bd18ceab7785978b6fb848.JPG58badc6e023f1_Madagascarammonite_48.5cm_32kg.thumb.jpg.7338df7fec24d3c9b1c3d22f37677bd0.jpg

" We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. "

Thomas Mann

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1 hour ago, Remc said:

Thankyou Ludwigia. What about with some acid solutions?

Like Kane already said, any kind of acid would probably do more damage than improve it.

 

Greetings from the Lake of Constance. Roger

http://www.steinkern.de/

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12 hours ago, abyssunder said:

It looks a bit like this one, maybe, which is from Madagascar, 48.5cm:

 

IMG_0158.JPG.1c3fb246e102a32179c0d47064daf53b.thumb.JPG.56cacd52b4bd18ceab7785978b6fb848.JPG58badc6e023f1_Madagascarammonite_48.5cm_32kg.thumb.jpg.7338df7fec24d3c9b1c3d22f37677bd0.jpg

Yes, it looks like this one, do you know its species ?

theme-celtique.png.bbc4d5765974b5daba0607d157eecfed.png.7c09081f292875c94595c562a862958c.png

"On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry)

"We only well see with the heart, the essential is invisible for the eyes."

 

In memory of Doren

photo-thumb-12286.jpg.878620deab804c0e4e53f3eab4625b4c.jpg

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Or maybe also this one, euaspidoceras, but it's only a supposition :

58bb882fe0162_-51.thumb.jpg.90128c15b7e5a15da3f628f0f709f373.jpg

theme-celtique.png.bbc4d5765974b5daba0607d157eecfed.png.7c09081f292875c94595c562a862958c.png

"On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry)

"We only well see with the heart, the essential is invisible for the eyes."

 

In memory of Doren

photo-thumb-12286.jpg.878620deab804c0e4e53f3eab4625b4c.jpg

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