Jump to content
Nugget Shooter Forums

What kind of stone is this?


Recommended Posts

Sample needs a cleaning first using a stiff plastic brush or a brass brush.  Be careful with the yellow mineral.  I see what looks like 3 distinct parts of this sample; the yellow, radiating crystals, the mammalian gray/white material & the "chalky" white area.  Once cleaned, test each part for hardness, streak, fizz test with weak acid or warm vinegar.  Report your findings.

  • Like 1
Link to comment
Share on other sites

The "yellow lines" are crystals. I'm thinking aragonite, but I can't tell for sure from the photos. The third photo shows some chalcedony. Both appear to have grown on whatever the host rock is. 

And please, don't smash it as a previous poster suggested. The interesting parts are most likely surface deposits and breaking it open isn't likely to show us anything new.

  • Like 1
Link to comment
Share on other sites

 

Well, having mulled over the photos, here is my best quests with no other info, using one of the photos:

 

 

Raubsville Stone Annotated_20171218b.jpg

Edited by 4meter
  • Like 1
Link to comment
Share on other sites

I'm going with a piece of quartz with an overgrowth of iron stained tremolite and containing some spotty mineralization.

Here's a few links that will help you understand the Geology of where your hunting:

Geology Map 

Geology of Northhampton County 1911

  • Like 1
Link to comment
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.

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...