Mineralization?

[Oakman404]

How do you know if you are in an area with moderate to high mineralization? I hunt primarily with the GTP 1350 which has automatic ground balance. I understand the Garrett double "D" 10x14 is for moderate to highly minerlized soil. How do you know, with automatic ground balance my machine always runs stable, my sensitivity is always set between 6.5 and 7.5. I have dug some pretty corroded pennies. Thanks for responding in advance.

 

[metalhead]

Mineralization can cause all kinds of problems with metal detectors. It can cause an increase in the audio threshold level resulting in false signals and/or signals being missed. It can also cause nulling or a reduction of audio threshold, resulting in missed targets. Mineralization can cause all kinds of false signalling as well as instability that would create erratic signals resulting in lost targets/signals being missed. I'm glad to see that your machine is acting well. That 10"x14" double "D" is a great searchcoil and will handle mineralization quite well. I was not aware that the 1350 had auto ground balance. I don't own one, but I've heard nothing but good things about it. Best of luck to ya!Happy Hunting!

 

[Oakman404]

Mineralization can cause all kinds of problems with metal detectors. It can cause an increase in the audio threshold level resulting in false signals and/or signals being missed. It can also cause nulling or a reduction of audio threshold, resulting in missed targets. Mineralization can cause all kinds of false signalling as well as instability that would create erratic signals resulting in lost targets/signals being missed. I'm glad to see that your machine is acting well. That 10"x14" double "D" is a great searchcoil and will handle mineralization quite well. I was not aware that the 1350 had auto ground balance. I don't own one, but I've heard nothing but good things about it. Best of luck to ya!Happy Hunting!

Metal Head, My 1350 has auto ground tracking and auto ground balance, so it automaticlly tracks and ground balances so how would I know if I am in a mod to high minerlized area?

 

[bearkat4160]

You cant tell the amount of mineralization with the GTP1350, but it does track well. You can tell the amount with the GTI 2500 in all metal mode. The higher it ground balances the higher amount of minerals. 12.7 is the highest on the scale. Here in Oregon it usually balances around 11.....pretty hot stuff. Georgia was around 9 on average. The new Fisher F75 will tell you amount, what kind...like iron etc and more info...nice stuff on that one. And I think the new Whites tells alot of info about minerals. So basically the 2500 tells hot or not hot, which is good enough for me. I detected a dry lake bed in Georgia couple years ago and it balanced at around 6...and I was using discriminate mode jewelry and it was getting crazy depth cause was mild mineralization. I was getting pulltabs at 10" with the 12.5 coil and imaging saw it and lock it in at 10" size B. Wow, that was nice! But at higher number like around 9 I wont get those numbers.

Alan

 

[Uncle Willy]

Crank your sensitivity up high or to max. If your tector goes nuts you have high mineralization. But do you have the new mineral chip installed which would pretty well negate that?

Bill

 

[Oakman404]

UW, My 1350 is just coming up on a year old so would I assume that I have the new chip?

 

[Oakman404]

Crank your sensitivity up high or to max. If your tector goes nuts you have high mineralization. But do you have the new mineral chip installed which would pretty well negate that?

Bill

If I crank my sensitivity up to say 9 or higher I do start to false. My machine is just a year old so I would assume it does have the new mineral chip.

Thanks, Rick C

 

[Uncle Willy]

Then you probably have some mineralization. Very few places are devoid of it, just some places have heavuer concentrations. It runs in the ground like the grain in hardwood and can change in a few feet.

Bill

 

[Oakman404]

Thanks UW. That helps a lot. I have dug some pretty corroded pennies so I figured we have some hot ground up here.

Rick