Grapite or Galena or neither?

[fuss]

I found this today and didnt think much of it other than it felt a lot heavier than other rocks of its size, so I dropped it...and it broke open...cool.
Streak is black magnet does not attract. about 2 inches in length.

 

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[buck8point]

Hematite Nodule (Concretion)

 

[DDancer]

Not hematite, streak would be red or redish. Definite crystal structure, rusty rind, black streak. Pyrite. https://www.minerals.net/mineral/pyrite.aspx