rockstock
spending too much on rocks
Member since April 2019
Posts: 472
|
Post by rockstock on Jan 26, 2020 14:02:58 GMT -5
|
|
Deleted
Deleted Member
Member since January 1970
Posts: 0
|
Post by Deleted on Jan 26, 2020 18:13:46 GMT -5
I think you are probably correct that it is slag from smelting metal (copper or iron). Really interesting shape and colors, though. Mineral collectors in Europe go through old slag searching for rare minerals that sometimes grow in cavities within slag chunks after they sit for a century or more.
|
|
rockstock
spending too much on rocks
Member since April 2019
Posts: 472
|
Post by rockstock on Feb 2, 2020 12:48:34 GMT -5
|
|