Northamaerican or

Looks like just a massive chalcopyrite ore. Nothing of interest. Where was this specimen found?

>>8564017
ur mom xD

>>8564017
>Nothing of interest.

Quiet Schlomo. OP, you have a rare piece of uranium oxide whose purity appears to be pushing the 30-35% range. These aren't unheard of in nature, but they typically don't occur on the surface. By the way, you're probably fine if you only handle it for a few seconds, but you should obviously wash your hands and store that thing in a thick metal container of some kind. I'd say a box of 1/4" steel plate will be adequate.

It's from a mine in Sudbury Ontario (Canada), I wasn't aware that I shouldn't be holding it,. Oups. But looks really interesting with all the different colors

>>8564036
Dude, what are you talking about?

>>8564017 >>8564005
It might be bornite. Those colors are a little too blue for chalcopyrite in my book.

>>8564070
I think that's what it is! Thanks !

>>8564045
>It's from a mine in Sudbury Ontario (Canada)
Then most probably it's chalcopyrite-bornite ore (mixture of both). Closer investigation needed in all case.

>>8564081
Assuming that means it's not really worth anything? It's just nice to look at ?

>>8564086
Exactly. But keep in mind that bornite is much more rare sulphide than chalcopyrite. You can easily get a great chunk or crystal of latter, but it's really difficult to obtain a big massive bornite specimen (let alone its well-shaped crystals, lol).