Help with identification please.

[BC1969]

Okay, I've been collecting these types of rocks for a couple of years now.
I don't know what they are.
Maybe chalcopyrite, iron pyrite or??
These are completely natural, in other words, I haven't treated them.
I cannot tell you where they are from.. I don't know.
This rock was brought into this area.
I'd say where, but knowing how many Michigander's are present in these forums.. NOPE!

 

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[stdenis_jd]

yep, chalcopyrite. Nice one

 

[stdenis_jd]

Or Bornite. Streak test would differentiate

Bornite - gray/black
Chalcopyrite - greenish black

 

[BC1969]

Here are some more. Same area.
Note the green staining denotes copper.
The top pic has copper/silver.
The three bottom pics are some white metal.
The bottom one has a vein of metal running through it.

 

[BC1969]

That bright purple/blue specimen streaks black.

 

[Eu_citzen]

I'd say its easier to see if a knife can scratch it. Pyrite won't be scratched by a knife.