Metal mineral specimen or just welding drip of some sort

[Misnomer]

Hi guys thanks in advance for your help. These were in some pails my grandpa used to store rocks or maybe artifacts. Would these just be a welding drip of some sort or a metal mineral specimen?

 

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[Kray Gelder]

They can't be iron, so what kind of metal do you think? I don't have a guess. Someone here has seen this before, no doubt.

 

[smokeythecat]

Looks a lot like aluminum slag.

 

[Misnomer]

Wow thanks for the quick reply guys, I just looked at google images and that’s exactly what it looks like!