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#51

madtuna
Member
From: , WA
Joined: 12 December 2012
Posts: 1,356
Member
11 March 2018 10:02 pm

Great idea...I like a good train wreck comedy thumbsup

2 users like this post: ProspectorPete, Ridge Runner

#52

egixe4
Newbie
Joined: 13 February 2018
Posts: 7
Newbie
13 March 2018 11:38 am

oldtimerROB wrote:

If he is using GOG mode it means the ground is at 100% mineralisation or he dosnt know that GEN will work at 90% and go deeper than GOG and that DI3 will also work at 90% and go even deeper than GEN. - result,a lot of shallow coins which previous prospectors missed due to the hot ground.
This video is short on specifics and very repetitious but I am looking forward to the field comparison between the Equinox/ Impact/Others that he promised.

Hi Rob,

I don't believe your theory is quite correct, COG mode does not mean Ground mineralisation is at 100%.
It's has more to do with the conductivity of the ground and the LACK of mineralisation.

For instance wet beach sand is highly conductive, but may well be very low in mineralisation.
COG mode is useful if you cant get a good GB due to the conductivity, or LOW mineral content of the ground.
COG mode means, Conductive Ground Mode.

Having just watched the Video, they said what they were chasing, Chinese Coins.
They achieved just that, so the settings used on the day gave them the desired result.

Cheers,

Mal

1 user likes this post: ProspectorPete

#53

oldtimerROB
Member
Joined: 01 December 2016
Posts: 273
Member
04 May 2018 08:49 pm

Hi Mal, So what you are saying there are no patches of 100% mineralised ground in the goldfields,only high conductive ground? I've struck small patches at the head of a gully at Havelock where my Impact overloaded about 30 of them in a 100x100 m area and the mineralisation meter was at 100%. These patches were small at around 2 foot across.One large area about 7 m across on a hill and one at Wedderburn about 3 m across. And some scattered ones around where I went. Only thing I know is in the COG mode the Impact will GB but all other modes not. I am going back to that hill soon to see if COG will find me some targets that others missed.

Cheers,
Rob.


A happy marriage means not having to spend all your days at the pub and so go detecting more often.

#54

egixe4
Newbie
Joined: 13 February 2018
Posts: 7
Newbie
04 May 2018 10:49 pm

No Rob I'm not saying that at all, but unless you find a patch of 100% iron, I doubt you've seen any ground that's anywhere near 100% Mineralised.

In regard to Metal detecting Mineralised Ground, means Magnetic Ground.

Now the meter on your Impact is a relative number, 100% on the Impact, may well be only 50% on a Garrett or 30% on a whites.
It has more to do with the GB range ability of the detector.

Now in that Video, and I know the Beechworth area quite well, I would guess that the soil was river bank sandy soil, of low mineral content, so they used COG.


Conductive<---------------Neutral-------------->Magnetic
Salt lake.........................Dry Sand...................Iron Stone
Wet Beach Sand

The Impact has all the Bell's and Whistles available

Auto GB Overload – Drop the gain
Still Can't Auto GB – Try Auto GB in GOG, then change modes
Still Can't Auto GB, Manual GB

Hope that Helps

Mal

2 users like this post: mbasko, ProspectorPete

#55

oldtimerROB
Member
Joined: 01 December 2016
Posts: 273
Member
15 May 2018 09:06 pm

Thanks for your info Mal.The percentage number on the meter is a good indicator of the relative amount of mineralisation of the various goldfields I have been to so far,and South Wedderburn comes at the top of the list with the highest percentage ie 90%. At the end of the day I am happy if my detector can GB everywhere in all the goldfields and only Wedderburn made the Impacts DEEP mode sluggish-by that I mean it can still GB but does not register a signal every second sweep. I am impressed DEEP can be used up to 85% as the Nokta manual advises to use it only in medium mineralisation.My other option at Wedderburn is to change the standard settings in DEEP to make it less sluggish, but there are lots of other modes like DI3 which work well there.
Wishing you the best,Rob.


A happy marriage means not having to spend all your days at the pub and so go detecting more often.


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