By Rick N. MI
How much can be disc out? Just wondering if it can disc out foil and be be used coin & relic hunting. I know it can disc out nails and still hit a 10k white gold earring. So it would be great for micro gold.
I hope Garrett makes the waterproof GMX in a light weight package. I wouldn't mind it in an AT Gold housing that can be hip mounted.
My hunting is mostly in mild sandy lakes and some relic hunting.
I had a GMX. A powerful detector. I wish I hadn't sold it. Now a light weight GMX would be nice.
By EL NINO77
My first impressions of ... Garrett Goldmaster 24K is a very stable and yet fully powerful detector on a 6x10 "coil ...
It can also be issued ..on 3 low - conductivity targets on my test field .. a piece of 0.05 gram gold stored at 10cm, a small 14mm silver earring at a depth of 20cm and a 14mm silver hammered coin placed at 23cm..in mild terrain ... Goldmaster on sensitivity 10. .and at low, and medium SAT can detect them nicely ... and I like deep VDI target identification .... in this test.
Tests were done on discrimination and on audio 2 tone ...
such very deep signals .... you already have in the identification of VDI 95 -99...
What really interested me in this test is that the detector retains the same range on such mild terrain as in the air test ... Airtest 0.1gram of gold is at 10.5 cm ,,, at 14 mm hammered it is 22-23 cm ... at discrimination and 2 tone audio ..
Now mineralization ..
At Sensitivity 7 ... it is stable even at strong mineralization of the "golden forest" with a value of 6 bar F3o4 / magnetite ..
But I will make more comparisons on various mineralized terrains..strength magnetite, hematite and various minerals ... such as Tesinite, Hematite type quartz from Pirenenei and iron stone ...
Now VDI identification ...
Identification of VDI Goldmaster 24k ... is very well and interestingly done ...
1.on VDI 50-60 you can identify very low conductive gold objects such as very small open gold earrings, 3mm stud earrings ,, at level 60 -70 other slightly gold low conductive objects .. ,,,,
2. on VDI 70-80 you can already identify some medium-sized old low-conductivity bronze objects ...., such as a Roman buckle .., or parts of it ...
3. VDI 80-88 .... will be a zone of low and medium conductive silver and gold hammered coins ,, as well as more modern coins based on nickel alloys ...
4 .. VDI ..90-99 ... is a zone of very many silver and copper coins .... highly conductive coins ..
I am satisfied with the fact that the Goldmaster 24K on the 6X10 "DD coil can correctly identify in the zone of non-ferrous targets VDI 99 ... a 42mm -28 gram large silver ..high conductivity coin ..- 1.Thaler 1870 M-T ... which is a coin the similar size of 1 silver dollar ...
As time goes on I hope to see more videos of the Garrett 24k used all over the world. The 24k does seem to impress those who have used it. We can never have too much choice when it comes to machines. As good as the new GPX 6000 is on small gold I still believe there is room for a good VLF in the arsenal. All the best.
We've been in a bit of a Covid lock-down recently and during that time my Garrett 24k arrived so I wasn't able to use it in the gold fields straight away, it was quite painful to look at it knowing I can't go and use it, fortunately we came out of our lock-down and as took off for a prospect with the 24k as soon as I could.
I ordered a White's 6" concentric coil for it to tie me over until Garrett and with any luck Nel come out with other coils for it, I hope they continue with the 6" Concentric as I'll buy a Garrett 6" Concentric as soon as they release it. It's a remarkably sensitive coil, I expected it to be less sensitive than it is as it's quite big however it surprised me and matches or exceeds smaller coils on other high frequency gold detectors. I've always been happy with Garrett coil quality so upgrading the Whites to a Garrett would be worthwhile I think. In saying that, neither the 10x6" Garrett coil or the Whites 6" coil were at all bump sensitive, not one bump noise the entire day. I'm so used to coil bump sensitivity from the Equinox and Gold Monster it was a rather pleasurable experience being able to scrub the coil on the ground like mad and bump it around not setting off the detector, giving me a distinct advantage over using bump sensitive coils.
I started the day using the 10x6" Coil as I wanted to see how it goes and I was going back to a spot I'd found a fair few grams of gold in the past, about 30 or more nuggets using the scrape and detect method taking off layers of soil at a time and detecting it. The initial nugget which was just under half a gram and a fair few more were found using my GPZ including a 4.2 gram nugget and then I brought in the Equinox with 6" coil to clean up as a majority of the nuggets were very small and the VLF's tend to do better cleaning up these very small nuggets. I'd even gone over this little scrape and detect area with the Gold Bug 2 however it was a bit of a nightmare as the area is absolutely full of hot rocks and the Gold Bug 2 in heavy hot rocks isn't a good detector in my opinion, it's too busy making it's response noise to the hot rocks to worry about the bits of gold next to the hot rocks so you miss nuggets if they're near hot rocks. The problem is this spot is loaded with hot rocks all through the soil of various shapes and sizes mostly a green type of schist that is all crumbly and broken up and detectors love to sound off on it. It's likely there from the old timers, it's basically some old workings where the old timers left their rock pile in a little gully, and right on the lower downhill side of the rock pile was my little scrape and detect patch. Even the GPZ struggled with all of the hot rocks so I was quite pleased how the 24k was coping with them, sure it was sounding off on some of them too but it wasn't too troublesome and seemed to ignore the little broken up bits and very usable.
I ran the 24k with the sensitivity maxed out, Sat on the middle setting and audio on Boost 2. The ground balance was quick and easy then I switched into the Locked balance mode. If the broken up schist bits of hot rock were too severe I left it in tracking which helped to knock them out. I gave the 6" Concentric coil a quick try and it struggled more with the hot rocks and i didn't want to lower my sensitivity down so I reverted back to the DD which appeared to handle them better and is still remarkably sensitive.
So I just started scraping back layers and detecting taking about 2 inches off at a time knowing the gold here is likely going to be very small and it will be stuff I've missed in the past as I've scraped this spot out before and back filled it so I was essentially checking the same soil all over again for anything I missed. I had high hopes I had missed some as all it would take is a small hot rock to be sitting on top of the bit of gold the previous time and I'd likely miss it or just the bit of gold on it's side being a very thin one or any number of reasons, even just at a depth too deep for the size of gold with the detector I was using.
It wasn't long and I had my first piece.
Quite a decent size one too, I was baffled at the time why I'd missed this one in the past. The 24k had now found it's first gold, highly likely the first piece of gold found in New Zealand with the Garrett 24k, a badge I'll wear proudly. 🙂
Next up was a reasonably faint but very repeatable signal with no target ID showing, I delicately used my scoop to scrape soil away knowing this was likely a very small bit of gold and it sure was... my smallest bit of the day too and surprised I managed to find it with the 10x6" coil, I don't recall ever finding a bit this small using the 10x5" type size on other detectors.
Can you spot it? 🙂
There it is!
0.007 of a gram, not bad for the 10x6" coil, especially in this hot rock infested ground.
I always check targets in case they're odd little bits of metal with my pick magnet, and you'll see it was quick to build up black sand, this soil has plenty of it in it.
I kept scraping down layers and found another.
Quite small too... but a bit more meat on it than the previous one 🙂
I'd had enough of the scrape and detect spot by now and wanted to go explore a bit to see how the 24k performed for general detecting so I walked for about 10 minutes to another spot I'd found some gold in the past and detected for about an hour digging plenty of shotgun pellets, completely normal in this area as there is a rabbit plague that causes countless thousands of shotgun pellets to be distributed all over the place for me to clean up 🙂 I didn't have high hopes as myself and a friend (JW) have absolutely thrashed this area but it's always possible to miss gold when there is so many pellets. We generally scrape a few times and if the signal persists dig it, if it moves after the first scrapes ignore it thinking it's very likely a pellet.
A few pictures of the sort of terrain I was detecting.
My batteries went down to 2 bars quite quickly, within an hour. I assume as they're rechargeable and run at 1.2 volts instead of 1.5 volts for standard AA's but it stayed at the two bars for the entire day so still plenty of life left in them yet by the looks of it.
Pretty wild rocky terrain and only really suitable for smaller coils.
The GPZ with it's stock coil is terrible here, the smaller the coil the better in general.
I did manage to find a piece though, after a lot of pellet digs 🙂
Not a bad size bit for the area too
I now decided I'd put the Whites 6" Concentric coil on and give it another go as this area doesn't have near as many hot rocks as my scrape and detect spot.
I found a bit of raised bedrock and had a signal that persisted down into the schist. At this point it almost had to be gold so I started filming.
And it was gold 🙂
I had to break up the schist to get it out.
A nice little piece too, a roundish flat one.
This area has plenty of black sand too, this was my pick after checking that bedrock in case it was a steel shotgun pellet.
It was getting near time to go get some dinner and I was pretty satisfied to even get one nugget in this area but I kept going a little while longer and it paid off. I like the bulls eye sight on the 6" coil, it really is the hot spot too, great for pinpointing.
I had a signal that persisted down into the gravels on the bedrock.
And got this one!
It's hard to tell the depth in the photo but it was a reasonable depth. A few inches anyway.
And that was it for the day, I was starving!
So, do I like the 24K? You're damn right I do, it certainly exceeded my expectations and will now be my primary VLF gold detector replacing my Equinox which replaced my Gold Monster, and the Gold Bug 2 was just not for me, I didn't gel with it at all especially with the masking from hot rocks. I look forward to getting more coils for the 24k, especially smaller ones, and judging by how well it handled the hot rocks I wouldn't mind a larger size coil for ground coverage too.
The total for the day. Very happy with the results.
Not sure if this has been covered before but I’d love to know how the Garrett 24K can handle heavily mineralised ground such as that found in Western Australia. Looking for fairly shallow nuggets amongst eye popping amounts of old iron trash targets. Yep, I’ve tried the Minelab PI machines with small DD and mono coils but I nearly threw myself down a mineshaft such was the frustration. I’m thinking a 6” sniping style coil is the way to go.
Thanks for any advice,