Jump to content
Nugget Shooter Forums
Sign in to follow this  
Jarl

ID Assistance

Recommended Posts

Hello,

Would appreciate any ID-eas on what I have here ...

Context: Creek Side Sand Bar.  East/Central Iowa.  A lot of what we have here is glacial deposition/drift-till I believe...so most likely it was left and not formed here.  There were similar nodular specimens in the same area, with the same vesicular characteristics. 

Tests Performed: None.  I have not streaked, burned, SG'd, HCI'd or properly MOHS'd it yet...though I did use a scissor blade(because Im lazy and it was close)to scratch what appears to be a denser, perhaps more vitrified(?) portion, and they did not scratch it.

Hypothesis:  A volcanic spindle bomb

Initial Basis:  Shape, exterior texture...because internet said so...

Alt Hyps: Concretion, extraterrestrial, some dumb thing, petrified bread dough, coral fossil...

Thanks for looking.

~ jarl

   
 

20181029_063414.jpg

20181029_063459.jpg

20181029_063810.jpg

20181029_063944.jpg

20181029_063710.jpg

Share this post


Link to post
Share on other sites

Piece of quartz.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...