Jump to content

What is this?

Jackalope122

By Jackalope122
in Fossil ID

 Share

Recommended Posts

Jackalope122 New Member

Jackalope122

Posted
Posted

Hello all, I'm once again asking for help in identifying an object I found. I have no idea what this is, it was found in Buchanan county Iowa, in an old quarry exposing Devonian aged material. It seems to have quartz on the bottom side (as far as I'm able to tell but I still have a lot to learn about rocks). It almost resembles shell material to me but maybe it's some kind of concretion or something. Hopefully someone has seen something like this, thanks for your help and time!

IMG_0248.JPG

IMG_0249.JPG

IMG_0250.JPG

IMG_0251.JPG

IMG_0252.JPG

Link to comment
Share on other sites
Monica Regular Member

Monica

Posted
Posted

I think you have a huge chunk of orthoconic nautiloid!  Your second picture has a small circular part near the top of the specimen - that might be the siphuncle.

  • I found this Informative 2
Link to comment
Share on other sites
ynot Regular Member

ynot

Posted
Posted

I agree with Monica.

The crystal are most likely calcite, but could be quartz. A drop of vinegar will distinguish which one. (calcite fizzes, quartz won't.)

  • I found this Informative 2

Darwin said: " Man sprang from monkeys."

Will Rogers said: " Some of them didn't spring far enough."

 

My Fossil collection - My Mineral collection

My favorite thread on TFF.

 

 

Link to comment
Share on other sites
Monica Regular Member

Monica

Posted
Posted
37 minutes ago, Jackalope122 said:

Thanks Monica!

 

You're very welcome!

Link to comment
Share on other sites

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 account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing
×
×
  • Create New...