Is it strongly magnetic? I'd guess magnetite in that case.
Another magnetic mineral is pyrrhotite, often has a bronze-like color and is only weakly magnetic.
No indication of pyrrhotite, probably magnetite with an interesting shape as magnetite forms in cubit to rhombic formations.... might be wrong but its an angular crystal
Without better pictures it looks meteorite-ish-like so if thats what you're hoping for go ahead n buy a bottle of DMG and see if it tests positive for nickel. It only costs around 20 bucks.