GB Numbers = Mineralization?
I often see posts on various forums where people use high GB phase numbers as examples of hot, mineralized ground. I thought that GB phase numbers are only indicative of the TYPE of ground(rock,soil,clay,salt). Rock, soil, and clay can actually be pretty benign or very mineralized. Isn't the determining factor for hot ground that affects metal detectors the amount of Fe3 in the soil? A phase reading of 89 may be mild soil if the amount of IRON in the soil is low. Conversely a phase reading of 6
I would say you have it spot on Merton.
It is a common misperception that the ground balance (ground phase) setting on a metal detector tells you how bad the ground is. It is only vaguely related to that. The ground balance setting is determined by the type of ground mineralization you are dealing with, but it does not directly report the amount of ground mineralization or magnetic susceptibility. In other words, you may be setting the ground balance to reject magnetite, the most common iro