✅ SOLVED noob needs some help with a heavy and hard rock

[hall]

its about 2 times as heavy as a typical rock of the same size and seems to be really hard(drove a nail with it and didn't mark it)

 

[hall]

thanks for the suggestion. got a blackish streak from it.

 

[Gunrunner61]

I don't know anything about rocks unless they are Arrowheads, But that thing Is killer looking!!!...

 

[hall]

thanks for all the input guys. i was talkin to another guy and it seems that its pyrite. so much for it being rare and valuable haha.