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  • 6 Post By bug
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Thread: which detector can handle hot rocks/cold stones better than SDC2300

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  1. #1
    de
    Apr 2017
    Germany
    Whites GMT + Minelab SDC2300
    34
    37 times
    Prospecting

    which detector can handle hot rocks/cold stones better than SDC2300

    I just returned from Kelowna, BC Canada. I tried to use my SDC2300 in Mission creek but the hot rocks/cold stones drove it nuts and I could not cancel them out. I also have a White's GMT and the stones I took home I cannot cancel out. Would the new White's 24K or a Gold Monster 1000 do a better job? Thank's for your comments.

  2. #2
    bug
    bug is offline

    Jun 2008
    Nor Cal
    155
    204 times
    All Types Of Treasure Hunting
    In my experience nothing is better than a sdc2300 for ground cancelling abilities. If that machine cant handle it, nothing will! When you're hunting creeks with any detector, try to find and stay on bedrock where the ground is a consistent balance. Thats where the gold is anyway. If you start detecting overburden you will encounter rocks of all varying ground balances, volcanic andesites, irons, etc, and you will pick up on those unwanted signals.

  3. #3
    us
    Aug 2015
    Montana
    etrac, GM 1000, GPX 5000
    153
    469 times
    Metal Detecting
    GM 1000 seems to do a good job on the cold stones and not too bad on the hot rocks once you spend time in a specific area and learn what to look/listen to? What I've noticed, in my limited experience, is that rocks change depending where I'm at? I usually don't use disc with the GM but sometimes it helps, once again depending on the rocks you're dealing with? The short time I owned a GPX 5000 (sold it) was when the hot/cold rocks disappeared almost completely....I was impressed. I would think your SDC would do a better job than a vlf? Have been told the area(s) I hunt are considered "average" as far as hot ground, etc?


    Curious what others with more experience have to say on this?


    For the most part, I don't sweat the hot/cold rocks much and when I do dig them it usually leans more toward an "iffy" type signal so when one pops up I just cuss a little because I kinda knew it could be a hot rock.....jmo

  4. #4

    Mar 2016
    1,031
    1519 times
    All Types Of Treasure Hunting
    The Makro Goldracer seems to easily identify hot rocks.
    The target ID will read on the extreme ends of the spectrum.
    You can reject those signals in discrimination mode or pause and look at the target ID number.
    Not perfect, but much better than some other alternatives.

    I have no experience with Canadian detecting.
    I also tend to lower the sensitivity when the ground gets challenging.
    Last edited by IMAUDIGGER; Nov 05, 2018 at 03:59 PM.
    Jim Hemmingway likes this.
    All treasures found with permission on private property or on active mining claims.

  5. #5
    us
    Nov 2012
    Whites TDI
    45
    30 times
    Metal Detecting
    Whites " TDI " will cancel out the hot rocks completely, while finding gold laying underneath the hot rock. Go to YouTube and do a search for this : "Whites GMT/TDI Pro", this video is showing exactly what your looking for. Best of Luck !
    Last edited by roadapple; Nov 05, 2018 at 07:18 PM.
    Jim Hemmingway likes this.

  6. #6
    us
    Jan 2016
    South of Gunnison, Gold Basin
    F2
    1,396
    1432 times
    Prospecting
    Fisher f2 doesn't have issues with that.

  7. #7
    Charter Member

    Apr 2003
    Alberta
    Various Minelabs(5000, 2100, X-Terra 705), Falcon MD20, Tesoro Sand Shark, Gold Bug Pro, Makro Gold Racer.
    4,816
    4572 times
    Prospecting
    So, this is an interesting thread as I just had a similar experience, while detecting on bedrock. I had my Minelab 5000, and my Goldbug Pro, and both machines were limited by the iron in the bedrock and by the number of chunks of highly-magnetic ironstone and chunks of iron ore broken from the bedrock.

    Horst, if you were encountering iron, a detector is built to find metal, so it will react. Not exactly sure if that was your true problem as the Minelab 5000 is great at ignoring many hot/cold rocks, but if the metal content is high enough, you'll get a signal, and that's the conundrum I dealt with last weekend in British Columbia.

    Did we find nuggets? Yes, but the depth the machines could see was severely limited by the iron in the bedrock and the overabundance of chunks of either iron ore broken from veins, or chunks of ironstone, and we sure dealt with many, many signals that weren't gold due to the high metal content of the plethora of metallic pieces.

    All the best,

    Lanny
    Nothin' quite as fun as chasin' sassy nugget gold! http://www.treasurenet.com/forums/me...mysteries.html

  8. #8
    de
    Apr 2017
    Germany
    Whites GMT + Minelab SDC2300
    34
    37 times
    Prospecting
    Hi Lanny,
    I just brought my SDC2300 to BC as I was very limited on baggage flying in from Germany. My SDC was not usuable at all as there were tons of those hot rocks. Probably a new high-tech VLF would cancel them out? I have a Whites GMT and the hot-rocks I took home the gMT can't cancel them out. I was thinking about replacing the GMT with a Whites 24K or a Gold Monster 1000. I do need a machine capable of finding sub grain not gram nuggets which is able to cancel out hot-rocks. As I have family in Kelowna, BC my wife and me will be going to that area again and again.
    Yout thoughts are highly appreciated.
    AU2U
    Horst
    63bkpkr and Lanny in AB like this.

  9. #9
    us
    May 2009
    Sailor Flat, Ca.
    SDC2300, Gold Bug 2 Burlap, fish oil, ACME handbook for TRUE prospectors (unread)
    5,013
    10689 times
    All Types Of Treasure Hunting
    Banner Finds (1)
    If a sdc is picking it up. there is no vlf that will handle it.

    the ground phase would change so much tuning it out that it will start to hit on other rocks. Like Bug mentioned

    I have an sdc and it made vlfs pointless for me. Until im looking for the last little crumbs in a clean spot.

    Yet, with the small targets I'm getting with the sdc my gold bug 2 is getting pretty dusty.
    Last edited by Goldwasher; Nov 09, 2018 at 09:05 AM.

  10. #10
    Charter Member

    Apr 2003
    Alberta
    Various Minelabs(5000, 2100, X-Terra 705), Falcon MD20, Tesoro Sand Shark, Gold Bug Pro, Makro Gold Racer.
    4,816
    4572 times
    Prospecting
    Quote Originally Posted by Horst View Post
    Hi Lanny,
    I just brought my SDC2300 to BC as I was very limited on baggage flying in from Germany. My SDC was not usuable at all as there were tons of those hot rocks. Probably a new high-tech VLF would cancel them out? I have a Whites GMT and the hot-rocks I took home the gMT can't cancel them out. I was thinking about replacing the GMT with a Whites 24K or a Gold Monster 1000. I do need a machine capable of finding sub grain not gram nuggets which is able to cancel out hot-rocks. As I have family in Kelowna, BC my wife and me will be going to that area again and again.
    Yout thoughts are highly appreciated.
    AU2U
    Horst
    Horst,

    Good to hear from you again. As Goldwasher has mentioned, if a PI sounds off on a troublesome hot-rock, there's not much chance a VLF won't. That's why I'm wondering if the rocks you're referencing aren't some form of iron ore (ironstone, high-concentration magnetite, etc.).

    As I stated above, if it's a metal the detector is reacting to, the machine is doing its job, what it was built for that is, its objective is to detect metal.

    The only other issue might be that there's something wrong with your SDC? Do you have a warranty for the machine? However, if you've gathered high-iron content rocks (check them with a super-magnet), their metal content might be the underlying issue.

    All the best,

    Lanny
    bug and Clay Diggins like this.
    Nothin' quite as fun as chasin' sassy nugget gold! http://www.treasurenet.com/forums/me...mysteries.html

  11. #11
    bug
    bug is offline

    Jun 2008
    Nor Cal
    155
    204 times
    All Types Of Treasure Hunting
    Horst, There is no other detector money can buy that will handle hot rocks better than the SDC. If the rocks are that bad for the minelab, they will be ten times worse on a VLF. The other detectors mentioned are basically toys in comparison to a PI detector. VLFs have their place for hunting trashy areas, or gold in low mineralized ground. But for canceling high iron mineralized conductive ground, and rocks, you already have the best money can buy. Unfortunately as you found out, there are still some conductive rocks out there that will play havoc even with PI detectors. Try to target bedrock and avoid the 2 feet of rocks on top, for example. The little 8 inch coil on the sdc is not a depth seeker, so you need to be close to, or on bedrock for best results in a creek type placer deposit.

  12. #12
    de
    Apr 2017
    Germany
    Whites GMT + Minelab SDC2300
    34
    37 times
    Prospecting
    Many thanks for your replies.
    I tried the rocks I brought from BC with a magnet and it sticks to them.
    So it seems like I don't need to wonder - right?
    I just wish I had more opportunities to use a MD on Gold but being in Germany I don't....unless I take it to a jewellery store :-)
    Lots of AU2 all of you!!!
    Horst

  13. #13
    Charter Member

    Apr 2003
    Alberta
    Various Minelabs(5000, 2100, X-Terra 705), Falcon MD20, Tesoro Sand Shark, Gold Bug Pro, Makro Gold Racer.
    4,816
    4572 times
    Prospecting
    Quote Originally Posted by Horst View Post
    Many thanks for your replies.
    I tried the rocks I brought from BC with a magnet and it sticks to them.
    So it seems like I don't need to wonder - right?
    I just wish I had more opportunities to use a MD on Gold but being in Germany I don't....unless I take it to a jewellery store :-)
    Lots of AU2 all of you!!!
    Horst
    Glad to know the rocks you packed out have such a high iron content as that could be why you were getting the signals.

    As for your detector, have you placed your manual on your bedside table or dresser and are you reading it nightly to review all of the little details of how to find gold with your machine? That was one of the best tips I ever received from a true Sourdough I met many years ago.

    If you have a dealer near you Horst, I'd still have your machine checked to make sure there's nothing faulty with it as well. (I imagine you checked for a loose connection/loose coil wire, etc. while you had it out? I remember detecting with a good friend of mine one day, and he was constantly getting signals no matter where he swung his coil, which was driving him crazy of course, and it was a simple fix, loose coil connection at the box. [I'm just trouble-shooting in my mind to see if it might have been something else.])

    All the best, and if you keep reading/studying/learning your machine, one day you'll get it over some gold so you can feel that nugget in your had, and it's something you'll always remember,

    Lanny
    Nothin' quite as fun as chasin' sassy nugget gold! http://www.treasurenet.com/forums/me...mysteries.html

 

 

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