Jump to content
Nugget Shooter Forums

Huge rock from Montana Help ID please


Recommended Posts

My grandmother who is 87 inherited this rock from her mother. It was found high in the Montana mountains. It was an engagement gift to her from a gentleman that climbed high in the mountains and brought it back to her. We were curious what it might be.  It weighs over 50 pounds. Any ideas? Thanks!  

8EC56262-13EA-4C4A-8792-38F9104B1BF6.jpeg

25496E27-5321-434F-AAC0-207FE8AD5A42.jpeg

562B949B-45DA-4EEB-B2CD-A957BA6D1191.jpeg

Link to comment
Share on other sites

Thanks so much.  My grandmother’s mother was gifted it from a gentleman that claims he got it from high in the Montana mountains.  This was over a hundred years ago. So I have no idea where it came from.  Thanks for your replies. 

Link to comment
Share on other sites

It is indeed man made glass. It could be from a glass foundry but more commonly these large pieces are from commercial metal smelting operations. The silica sand used in the smelt are skimmed off the hot melt and discarded as large glass blobs. As the glass cools it tends to shatter. The white balls you see in the glass are spherulites formed from the slow cooling of the large mass of glass.

It could have been found near a smelting operation in Montana or a lead smelting operation in Missouri. It all looks very much alike after they have cooled.

  • Like 3
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...