MrNovice
Forum Supporter
Bingo.
One problem with the soil in this area is its general color.
Rust colored.
So unlike say some of the Hoover boys videos where I have seen the rust spots in the dirt/plug.
Something I may try and do.
Carefully scoop a little of the close surrounding dirt and put in container.
See what magnet does to it.
And try and get some dirt from just outide this what seems like a less ferrous contaminated area and compare as far as quaintly of (dirt, etc) that stick ps to magnet.
Might tell me some thing.
I wonder though, is this decomposed ferrous (assuming)- is it ferrous or nonferrous.
Nonferrous (decomposed ferrous) I suppose could mask a nonferrous target too.
Maybe try breaking it up smaller or charging it slightly with warm water like listed here: https://www.scientificamerican.com/...-of-your-breakfast-cereal-bring-science-home/
Iron is pretty much everywhere, just in different quantities.