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Removing Matrix From Sharks Teeth


uncoat

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I just picked up a sharks tooth that almost fully incased in matrix. I found this on the Oregon coast. Somewhere a bit less known for sharks teeth. So will a well planned hit with a hammer be the best way to go? Or should a use an air chisel? I guessing a hammer to the right edge would do the trick but i really dont want to break it. The rock should crack at the enamel of the tooth right? Any advice?

Thanks, Nick

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Nick...... If what you say is true about the about the location you found the tooth being unusual, its certainly worth trying to preserve the tooth.... hitting it with a hammer is just too risky and an air chisel is a little aggressive for a shark tooth..... If you dont have the equipment yourself I would consider finding someone who has airscribes and does fossil preparation for others possibly somewhere near you, or someone you can post the tooth to..... Im sure these guys will help with a contact......with the right equipment they will tease the tooth out of the rock and then maybe air abraid the last bit of the matrix off.... Its certainly not worth risking whacking it with a hammer....

Maybe they can leave the tooth attached to the rock on the non display side and make it as a natural stand with a flat base to display the tooth.... a photo of the rock and tooth would help....

Cheers Steve... And Welcome if your a New Member... :)

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Nick...... If what you say is true about the about the location you found the tooth being unusual, its certainly worth trying to preserve the tooth.... hitting it with a hammer is just too risky and an air chisel is a little aggressive for a shark tooth..... If you dont have the equipment yourself I would consider finding someone who has airscribes and does fossil preparation for others possibly somewhere near you, or someone you can post the tooth to..... Im sure these guys will help with a contact......with the right equipment they will tease the tooth out of the rock and then maybe air abraid the last bit of the matrix off.... Its certainly not worth risking whacking it with a hammer....

Maybe they can leave the tooth attached to the rock on the non display side and make it as a natural stand with a flat base to display the tooth.... a photo of the rock and tooth would help....

Thanks alot for the advice Steve. Its prolly not super rare or anything but Oregon is not florida. Not a commen find. I will post a pic as soon as the sun comes out. Not alot to see though. Just a bit of the root and a tiny bit of enamel.

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pics are necessary but there is not a good way without messing with the piece to tell whether the fossil is harder than the matrix or not. using brute force to try to extract a shark tooth from matrix will frequently result in a destroyed specimen. most people without access to professional tools will pick away at the matrix with a pin vise or something in a very careful effort to expose the fossil. but there is technique involved and you should read up on fossil preparation before you attempt anything since the piece isn't going anywhere and you can delay attempting to deal with it until you're sufficiently armed with information and whatever tools you wish to try.

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:) I second the motion to leave the tooth in the matrix.I have a great white I found and prepped it like mentioned.

Everyone that sees it comments on it. :D

Bear-dog.

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I third the motion - and by the way, fossil shark teeth from the Oregon coast are VERY desirable, and NOT very common on the market- If enough of the tooth is exposed for a general ID, leave it alone.

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We posted at the same time. Send it to one of the awesome prep guys in your geo that are members of this forum!

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OOF! That matrix looks hard!

It's going to take an air scribe (in experienced hands) to expose that tooth.

"There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant

“Try to learn something about everything and everything about something.” - Thomas Henry Huxley

>Paleontology is an evolving science.

>May your wonders never cease!

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yes, interesting piece, but i'd definitely use a magnifying visor, an air scribe, and air abrasives on that piece, and i'd doing it very carefully.

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I've heard of megs from Oregon, but that's really interesting. Great find, very uncommon. The matrix looks incredibly hard; maybe try the user RJB.

Edited by THobern
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The Astoria Formation (Early-Middle Miocene) contains concretions with vertebrate fossils inside but I think there is more than one formation exposed along the Oregon coast that yields fossil-bearing concretions. Other local collectors, pro or private, recognizing the rock type might be able to tell you the formation and age.

Good luck on the prep.

Here are some pics.

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I've heard of megs from Oregon, but that's really interesting. Great find, very uncommon. The matrix looks incredibly hard; maybe try the user RJB.

So does that look like a meg then? Thats what i thought when i found it but i guess thats what everyone is kinda hoping for when they find fossil sharks teeth.

Im still pretty new to my Paleo Aro so i guess i will look for someone local to prep it. Thanks for all the great advice.

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Uncoat...... Thats going to look 'fabulous'.... left on the rock with a cut base for display..... chose your prepper carefully.... ask to see some similar pen and abrasive work before you chose......There are preppers and 'preppers'....and that deserves the best if its as rare as these guys say.....

Cheers Steve... And Welcome if your a New Member... :)

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You already have a scribe! Cool...practice on some low-value stuff in the same matrix; when you're ready, take it on yourself. You'll defer the gratification, but the payoff is a self-prepped fossil (and experience with the scribe). :)

"There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant

“Try to learn something about everything and everything about something.” - Thomas Henry Huxley

>Paleontology is an evolving science.

>May your wonders never cease!

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So does that look like a meg then? Thats what i thought when i found it but i guess thats what everyone is kinda hoping for when they find fossil sharks teeth.

Tough to say with so little exposed, and nothing for scale. But, to me, those serrations look deeper than a meg, it could be a great white.

"There is no difference between Zen and Purgatory and Time Warner Cable, and they are trying to tach me this, but I am a dim impatient pupil."

----- xonenine

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Just my two cents, but with a fossil that rare, I wouldn't do it yourself. Get someone with a decade or two of experience. With a piece as rare as an Oregon meg, it should be worth the cost.

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  • 2 weeks later...

Uncoat... what did you decide to do? Im intrigued :)

Well im going to have someone prep it for me. Right now i don't have the time to be looking for people in my area who can do that... As soon as i have some free time i will be asking a few people i have in mind.

Anyone here in the Oregon area that i can trust to do a great job or knows of someone who can?

Thanks.

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  • 2 years later...

What might the size of your tooth be? And surely by now you have made some progress

I just found this post today, otherwise I would have responded sooner. I do/have done the work on all my Oregon fossils

PM me I've got many questions.

post-9950-0-34821200-1360799485_thumb.jpg

Edited by PRK
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Tough to say with so little exposed, and nothing for scale. But, to me, those serrations look deeper than a meg, it could be a great white.

I second that. I'm pretty sure it is a great white judging from the serrations and shape of the root.

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Many of the concretions found along the Oregon Coast respond well to acid preparation, if done by someone familiar with the technique.

The plural of "anecdote" is not "evidence".

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  • 2 years later...

Hey uncoat, how did the tooth turn out?

"Or speak to the earth, and let it teach you" Job 12:8

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