Fe3O4 G2/GBP Iron Oxide Scale

[berryman]

It's my understanding the iron oxide scale is primarily used to measure the amount of mineralization in the soil. But the scale also appears to fluctuate as the coil passes over various targets in the ground. What do the scale readings tell one about the targets under the coil (if anything) and how can the scale be used to make better dig/no dig decisioins?

 

[Tom Slick]

The scale fluctuates as the coil is passed over a target because the detector is reading the soil contents and now a target is also in the mix. As far as how it can be used to help make a dig or don't dig decision, I don't think it can be used for that. It is helpful when gold prospecting in that it can be used to help track ground mineralization, looking for black sand (heavy) concentrations where nuggets may be found.