The same here. Dry conditions of highly mineralized ground, here where I am, seems to be always more productive.
My thoughts:
There is information at this site:
http://minelab.com/aus/consumer/knowledge-base/technical-notes
Ground Mineralisation
where in part, tells, us that:
"Old grounds that have been at the surface for a long time often have high levels of mineralisation. This is due to the action of
water causing iron compounds to migrate to the surface. Highly mineralised soils can often be recognised by their red colour.
It might explain, why when such ground is dry, it may have less of an influence on a detectors ability, due to these minerals not being more conductively bound by the presence of water that would make it a more impenetrable mass.
It's the only thing I can guess that is happening when I detect in such dry soil conditions. Can't explain it any other way.
I've been finding good targets in an area, I thought was compltety cleaned out by all my Explorers being the XS, Ex2 and SE and my DFX. There are still copper and silver coins here (maybe gold ones as well) and the Etrac is finding, that what I could not find in the winter, at this very same site.
Now when it is very dry, there are targets, some shallow, some deep, in what is, yes, very hard to dig soil, but any problems in retrieving a target can be overcome with a little consideration and using the right tools to dig them out.
david di
