Found this detecting in a river

[Andrew b]

So I was metal detecting in a river know to contain gold and platinum it feels to light to be lead and to hard to be aluminum I'm trying to clean it more to get a better look if anybody has any idea what this is plz let me know.

 

[DizzyDigger]

Looks a bit like a melted aluminum can.

Welcome to the site.

 

[Andrew b]

Dang was hopeful, so I noticed you are in concrete have you ever been to William's creek and had any luck?

 

[DizzyDigger]

Dang was hopeful, so I noticed you are in concrete have you ever been to William's creek and had any luck?

I hear that's a great area for gold, but I haven't done any prospecting
on the East side of the Cascades. I do know there's quite a few claims
in that area.