From Crab to keichousaurus fossil

[LiamL]

Very cool thread. 

I have a bone block with verts in it than even my TT scribe struggles with. Very thick with horrible pyrite. 

I'm wondering if i should try some vinegar? 

It's from Yorkshire in England 

 

 

[Ptychodus04]

43 minutes ago, LiamL said:

Very cool thread. 

I have a bone block with verts in it than even my TT scribe struggles with. Very thick with horrible pyrite. 

I'm wondering if i should try some vinegar? 

It's from Yorkshire in England 

 

 

Test a section by dropping a bit of vinegar on it. If it fizzes, it will react. Pyrite typically doesn’t respond to vinegar unless there’s a good bit of lime in the matrix. I’ve used sulphuric acid on shark coprolites that don’t react with vinegar. That stuff is dangerous though. Be very careful experimenting with acids.

 

 

[RJB]

On 12/21/2018 at 9:59 AM, Ptychodus04 said:

 I’ve used sulphuric acid on shark coprolites that don’t react with vinegar

Ok, i just have to ask.  Why would you use acid on shark poop?

 

RB

[Ptychodus04]

1 hour ago, RJB said:

Ok, i just have to ask.  Why would you use acid on shark poop?

 

RB

That’s a fair question. These coprolites had a significant amount of fish bone packed in them and I was attempting to identify the meal. 

[RJB]

21 hours ago, Ptychodus04 said:

These coprolites had a significant amount of fish bone packed in them and I was attempting to identify the meal. 

Inquiering minds want to know. 

 

RB

[Ptychodus04]

7 hours ago, RJB said:

Inquiering minds want to know. 

 

RB

Most were full of unidentifiable bone fragments but a couple had bits of Apsopelix sp. and Enchodus ferox.