Hi Clay I am such a rookie! I have heard of slag before but what confuses me is the tests I’ve done on the material. It scratches glass, is heavy for its size, the stones have two different streak colors, (red hematite and black for magnetite) When I put the piece to a magnet it sticks strongly, I meant slightly magnetic meaning other metal objects stick to it slightly. So do you still think it’s slag? Also I want to do a mining claim cause I think this is a totally new mineral. I found it in the water and outside of the water in sand, a lake. Not in Elba but north of Elba, closer to Milan, Italy. Hope this helps and yes there is a railroad about 20 min driving distance from the lake.