mineralized soil

I'm sure this has been brought up a millions times but I couldn't find exactly what I was looking for. So my question is what does mineralization have to do with metal detecting exactly and what do we look for? Good spots vs bad spots? like give me some scenarios. Normally I just roll up to a...

Hi everyone, I'm new to this forum. I need help buying a new metal detector, I'm really torn between an Etrac and a Deus (common dilemma :D) I'm a coin / relic hunter, not interested in digging iron. My research conditions are as follows: highly mineralized soils (volcanic soils), often...