What can this be

[Opps56]

Found yesterday in city park. It is magnetic, we grinded one area to expose shiny metal.

 

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[lairmo]

Slag...?

https://www.iforgeiron.com/gallery/image/37416-metal-in-rock-or-slag/

 

[Brushy Bandit]

I've found much of the same material and through research and posts like this one, I believe lairmo is correct. Slag. In my experience there should be more located nearby. Has there been a furnace or railroad located nearby in the past?

 

[Opps56]

We found it on what is now a sports playing field. There is a rail road track about a mile away. We did detect and dig up lots of other rusty nails, screws and some larger pieces of metal that were pretty easy to identify as junk iron. Well I hate to break the bad news to the boys but they were leaning to a meteorite.

 

[A2coins]

Ive found many of those.. Dont tell them till they are older lol. I had a picture my Art teacher drew and I told my mom I drew it she hung it in the living room must have been 15 years later I told her I didn't draw it lol she said yep I knew it all along lol