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Anonymous
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If the DXF detector has variable frequencies, would this be better for nugget detecting then the MXT? Or is it even used for prospecting?
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Anonymous
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For gold, the higher the frequency the better.
The DFX can be used for nugget hunting, but it is not as hot on them as the MXT is. In any case, neither one is as good as a dedicated nugget hunting detector.
The DFX can be used for nugget hunting, but it is not as hot on them as the MXT is. In any case, neither one is as good as a dedicated nugget hunting detector.
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Anonymous
Guest
I used the MXT prospecting up in the Brooks range (northern AK), in highly mineralized soil, and was popping sub-grain nuggets. The smallest was about 1/3 of a grain & the largest was a bit over an ounce. Sometimes I'd get even smaller stuff when hunting bedrock, but there would only be a kind of crackle to give it away. ..Willy.
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Anonymous
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http://bb.bbboy.net/alaskagoldforum-viewthread?forum=2&thread=349
DW
DW
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Anonymous
Guest
Operating frequency DOES have an influence on the size of nuggets found, but this influence is far less then is often advertised. For example, the GMT and the MXT share the same prospecting circuitry, but operate at different frequencies; the MXT operates at 13.88 kHz, whereas the GMT operates at 48 kHz. My personal tests, here in the Mojave Desert goldfields, indicate, that with good headphones, the GMt can nuggets as small as 1/10th grain, and the MXT as small as 1/4 grain. There is NOT a whole lot of difference between nuggets (actually, small flakes) of those sizes. For the uninitiated, a 1 grain nugget is about twice the size of an average sesame seed. Thus a 1/10th grain flake is about 1/5th the size of an average sesame seed. So, yes, the higher frequency of the GMT does help find "smaller" nuggets. HOWEVER, more is involved in the difference between the DFX and the MXT as regards nugget-finding ability. Sensitivity to small targets is also critical. While the MXT, fitted with the 950 coil can find flakes as small as 1/4 grain, the DFX, fitted with the same size coil, needs the nugget to be at least 7 grains before it can be sensed. A 7 grain nugget is about the size of an average size dry split pea, or twice the size of a grain of wheat. If you are thinking of buying either the DFX or MXT for nugget hunting, I would overwhelmingly recommend the MXT. Hope this helps; HH jim
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Anonymous
Guest
even though I wasn't the one that asked the original question. I knew that you do alot of nugget hunting and was hoping that you'd come in and give your thoughts as I also have an MXT that I hope to do some nugget hunting with this season.
DW
DW
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Anonymous
Guest
<BLOCKQUOTE>I used the MXT prospecting up in the Brooks range (northern AK), in highly mineralized soil, and was popping sub-grain nuggets. The smallest was about 1/3 of a grain & the largest was a bit over an ounce. Sometimes I'd get even smaller stuff when hunting bedrock, but there would only be a kind of crackle to give it away. ..Willy. </BLOCKQUOTE>
What you wrote is totally consistent with what I wrote and Jim McCulloch's post, who also confirmed that the GMT can detect smaller flakes than the MXT and also mentioned that other factors are also involved.
I am confused. <img src="/metal/html/confused.gif" border=0 width=15 height=22 alt=":?"> What are you begging to differ with in my post?
What you wrote is totally consistent with what I wrote and Jim McCulloch's post, who also confirmed that the GMT can detect smaller flakes than the MXT and also mentioned that other factors are also involved.
I am confused. <img src="/metal/html/confused.gif" border=0 width=15 height=22 alt=":?"> What are you begging to differ with in my post?
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Anonymous
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.... and those of you within reasonable driving distance are invited to my booth to "talk gold." HH jim
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Anonymous
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[No message]
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Anonymous
Guest
The MXT is, basically a dedicated nuggethunting detector that has had the disc. capabilities added. I've used detectors that were pure nugethunters & they did no better than the MXT in the areas that I was hunting. Up in the Brooks range where I was prospecting, there were both an AU 52 & a Goldmaster 4(I think it's the 4.. the one before the GMT) that were almost unuseable. There was also a BG1 that suffered from massive SAT overshoots when anywhere near the water & on some tailing piles. The MXT ran stable except when going in & out of the water at the highest gain/SAT setting. Never had a GMT up there (though there was once a GB2 and it plain didn't work) but, from what I've read on the net, it would probably have to be detuned sooo much that there wouldn't be any advantage to using it. I suppose it all depends on the mineralization where one hunts. ..Willy.
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Anonymous
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I was also in the Brooks Range "81",along the Atlanta River, awesome country, it's been along time. I went up there for a summer after high school. I liked it so much, I stayed the winter in Hope, just south of Anchorage. Where in the Brooks Range did you detect?
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Anonymous
Guest
About 20 miles north of Coldfoot.