Michigan’s Upper Penninsula has the purest copper deposit in the world. In many cases it’s 100% pure native.
The mid continental rift event which occured over 1 billion years ago brought copper to the surface.
This crystal was freed from calcite and matrix using muriatic acid.
Gediegen Kupfer fehlt mir noch in meiner Sammlung 👍
Oooh, lovely!
Thanks! I can find pounds metal detecting at the abandoned mines.
Nice! I've always wanted to visit the UP of Michigan. It's seems like it would be fascinating place geologically and culturally speaking. I write about geological topics as well! I'll give you a follow! :)