Dracarys Posted May 16, 2020 Share Posted May 16, 2020 Hi all. I have a piece of matrix that has been consolidated in paraloid. How long do I soak it in acetone to dissolve the consolidation? Thank you in advance. Link to comment Share on other sites More sharing options...
jpc Posted May 16, 2020 Share Posted May 16, 2020 Paranoid? Insert funny joke here that I cannot put together. If you dunk this in acetone, the acetone will dissolve the paraloid (with an L) pretty quickly (less than a minute). If the paraloid is holding the rock/fossil together... goodbye rock/fossil. To be more careful, use an eyedropper or paintbrush (natural bristle, notplastic) to dissolve the paraloid in smaller bits. 1 Link to comment Share on other sites More sharing options...
Dracarys Posted May 16, 2020 Author Share Posted May 16, 2020 14 minutes ago, jpc said: Paranoid? Insert funny joke here that I cannot put together. If you dunk this in acetone, the acetone will dissolve the paraloid (with an L) pretty quickly (less than a minute). If the paraloid is holding the rock/fossil together... goodbye rock/fossil. To be more careful, use an eyedropper or paintbrush (natural bristle, notplastic) to dissolve the paraloid in smaller bits. Thanks! Oops, snarge autocorrect... Link to comment Share on other sites More sharing options...
Harry Pristis Posted May 16, 2020 Share Posted May 16, 2020 2 hours ago, Dracarys said: Hi all. I have a piece of matrix that has been consolidated in paranoid. How long do I soak it in acetone to dissolve the consolidation? Thank you in advance. Curious. Why would you want to dissolve the consolidation? http://pristis.wix.com/the-demijohn-page What seest thou else In the dark backward and abysm of time? ---Shakespeare, The Tempest Link to comment Share on other sites More sharing options...
Dracarys Posted May 17, 2020 Author Share Posted May 17, 2020 17 hours ago, Harry Pristis said: Curious. Why would you want to dissolve the consolidation? I obtained a croc tooth in Aguja matrix and you can dissolve to find many micro fossils. Link to comment Share on other sites More sharing options...
Harry Pristis Posted May 17, 2020 Share Posted May 17, 2020 I see. If there is no significant macrofossil being held together by the consolidant, what difference does the duration of the soak make? The microfossils won't be damaged by an acetone soak for a day . . . a week . . . a month. 1 http://pristis.wix.com/the-demijohn-page What seest thou else In the dark backward and abysm of time? ---Shakespeare, The Tempest Link to comment Share on other sites More sharing options...
Dracarys Posted May 17, 2020 Author Share Posted May 17, 2020 1 hour ago, Harry Pristis said: I see. If there is no significant macrofossil being held together by the consolidant, what difference does the duration of the soak make? The microfossils won't be damaged by an acetone soak for a day . . . a week . . . a month. I guess just impatience. There is a 2 inch deinosuchus tooth but it is one piece and not held together but consolidant. Link to comment Share on other sites More sharing options...
hadrosauridae Posted May 17, 2020 Share Posted May 17, 2020 why was the block consolidated if nothing was broken? 1 "There is no shortage of fossils. There is only a shortage of paleontologists to study them." - Larry Martin Link to comment Share on other sites More sharing options...
Huntonia Posted May 18, 2020 Share Posted May 18, 2020 13 hours ago, hadrosauridae said: why was the block consolidated if nothing was broken? maybe they wanted to keep the matrix intact for appearances sake. Personally I prefer most fossils in matrix, I think it makes for a better display. I wonder if whoever worked on it shares my preferences and wanted to make sure the matrix maintained it's integrity. 1 Link to comment Share on other sites More sharing options...
Bobby Rico Posted May 18, 2020 Share Posted May 18, 2020 8 minutes ago, Huntonia said: maybe they wanted to keep the matrix intact for appearances sake. Personally I prefer most fossils in matrix, I think it makes for a better display. I wonder if whoever worked on it shares my preferences and wanted to make sure the matrix maintained it's integrity. It is always personal taste but I am with you I like the the look of fossil in the matrix where possible I keep them as is. They definitely can make for interesting displays . 1 Link to comment Share on other sites More sharing options...
Troodon Posted May 18, 2020 Share Posted May 18, 2020 The Aguja matrix, like most others (HCF, JRF) is not very stable so if you want to keep it intact it should be consolidated. I'm typically a fan of matrix fossils but this matrix is rich in microfossils. So if its just a Croc tooth on it I would be very tempted to do the same. Although not common theropod teeth are found in these blocks and I have spent hours looking for and finding them. Lots of very cool shark teeth are also found. After I discovered this tooth needed to consolidate it 1 Link to comment Share on other sites More sharing options...
Dracarys Posted May 18, 2020 Author Share Posted May 18, 2020 On 5/17/2020 at 2:07 PM, hadrosauridae said: why was the block consolidated if nothing was broken? 11 hours ago, Troodon said: The Aguja matrix, like most others (HCF, JRF) is not very stable so if you want to keep it intact it should be consolidated. I'm typically a fan of matrix fossils but this matrix is rich in microfossils. So if its just a Croc tooth on it I would be very tempted to do the same. Although not common theropod teeth are found in these blocks and I have spent hours looking for and finding them. Lots of very cool shark teeth are also found. After I discovered this tooth needed to consolidate it You are correct Frank. The tooth was in a matrix that was 6 inch in size. After it soaked in acetone, I then dissolved part of excess matrix in water while leaving the tooth above the water line. This was as much a learning exercise for me on fossil preparation and unpreparation. The Deinosuchus tooth remains safely in the matrix unharmed in the process. I so far have found baby croc tooth, various fish teeth, gar scale and another that I am uncertain about (baby, baby croc?). See first pic below. 1 Link to comment Share on other sites More sharing options...
Troodon Posted May 18, 2020 Share Posted May 18, 2020 Nice, Sankey ( 2008 )describes the croc tooth as an indeterminate Crocodylian. The other two are amiidae fish teeth Melvius sp. which are some of the most common teeth in that matrix 1 Link to comment Share on other sites More sharing options...
Dracarys Posted May 18, 2020 Author Share Posted May 18, 2020 1 hour ago, Troodon said: Nice, Sankey ( 2008 )describes the croc tooth as an indeterminate Crocodylian. The other two are amiidae fish teeth Melvius sp. which are some of the most common teeth in that matrix Thank you Frank. I was fun to search for the microfossils but quite tedious work. Link to comment Share on other sites More sharing options...
hadrosauridae Posted May 18, 2020 Share Posted May 18, 2020 10 hours ago, Bobby Rico said: It is always personal taste but I am with you I like the the look of fossil in the matrix where possible I keep them as is. They definitely can make for interesting displays . The OP said nothing of a prepped tooth, just a block of consolidated matrix containing a tooth. "There is no shortage of fossils. There is only a shortage of paleontologists to study them." - Larry Martin Link to comment Share on other sites More sharing options...
Ptychodus04 Posted May 18, 2020 Share Posted May 18, 2020 2 hours ago, hadrosauridae said: The OP said nothing of a prepped tooth, just a block of consolidated matrix containing a tooth. The assumption is that there is a macro-fossil of some kind visible in the matrix as it would be pointless to consolidate a piece of matrix with nothing visible. 2 Regards, Kris Global Paleo Services, LLC https://globalpaleoservices.com http://instagram.com/globalpaleoservices http://instagram.com/kris.howe Link to comment Share on other sites More sharing options...
Dracarys Posted May 20, 2020 Author Share Posted May 20, 2020 @Troodon I am now ready to consolidate the fossil again. How long do I need to soak it in the Vinac? Thanks in advance. Link to comment Share on other sites More sharing options...
Troodon Posted May 21, 2020 Share Posted May 21, 2020 I dont soak it just coat the surface of the fossil with a brush. The vinac mix should penetrate an open pores. Link to comment Share on other sites More sharing options...
Dracarys Posted May 21, 2020 Author Share Posted May 21, 2020 5 minutes ago, Troodon said: I dont soak it just coat the surface of the fossil with a brush. The vinac mix should penetrate an open pores. Thanks Frank! Link to comment Share on other sites More sharing options...
.thumb.jpg.51c371f10936bbc883322324e44cc518.jpg)
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now