This pot might be part of what I've seen identified as a fireplace starter unit.
The pot held kerosene and would have a lid with a slot in it. There's a metal rod with a handle and a stone-like material at the opposite end that sits in the kerosene and absorbs it. The user would ignite the end of rod and put it into the kindling in a fireplace. These units are heavier than they look, considering your observation on its weight.
I'm away from home for a few days, but will check my unit out and if it's similar to yours, I'll send a few pictures.
The pot held kerosene and would have a lid with a slot in it. There's a metal rod with a handle and a stone-like material at the opposite end that sits in the kerosene and absorbs it. The user would ignite the end of rod and put it into the kindling in a fireplace. These units are heavier than they look, considering your observation on its weight.
I'm away from home for a few days, but will check my unit out and if it's similar to yours, I'll send a few pictures.