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Dances   With Doves

Impulse AQ - Places You Might Take It

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3 hours ago, Steve Herschbach said:

Never would have thought of that! :laugh:

how is the mineral content in lake tahoe. Is it bad?I   heard that the land on that lake is highest price in country.Canandaiugua lake by me is  second so I hear.Canandaigua is where Susan b Anthony had her trial. I found a steamer tag 1865-1889 from a ship by that name that I think burnt.

 

 

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1 hour ago, Dances With Doves said:

how is the mineral content in that lake.Is it bad?I   heard that the land on that lake is highest price in country.Canandaiugua lake by me is  second so I hear.Canandaigua is where Susan b Anthony had her trial. I found a steamer tag 1865-1889 from a ship by that name that I think burnt.

Lake Tahoe beaches are loaded with magnetite and there are some hot rocks also. Most VLF detectors are getting 50% of depth if they even work at all.

Here is a picture of pure magnetite sand streaking a beach at Tahoe. And a magnet I simply dropped and picked up - a solid golf ball of magnetite. It's places like this where you need a PI detector. A VLF is only scratching the surface.

lake-tahoe-magnetite-sand.jpg
Lake Tahoe magnetite sand

lake-tahoe-magnetite-sand-ball.jpg

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22 minutes ago, Steve Herschbach said:

Lake Tahoe beaches are loaded with magnetite and there are some hot rocks also. Most VLF detectors are getting 50% of depth if they even work at all.

Here is a picture of pure magnetite sand streaking a beach at Tahoe. And a magnet I simply dropped and picked up - a solid golf ball of magnetite. It's places like this where you need a PI detector. A VLF is only scratching the surface.

On average lake Ontario is not as bad as that  .It is when a storm hits and separates the tan  sand from black sand that my xterra would overload.  We  also have charcoal looking hotrocks that can be the  size  of a softball.We   did have  a coal plant a few miles away.We also have a river coming  into it from Penn. close by.A Florida hunter from the gulf coast could not believe all the black sand stuck to his magnet and the big hot rocks.He brought one back to  Florida  to show his hunting buddies.

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The AQ in its normal all metal or either of the discriminate settings cuts easily through black sand. In addition there is a Volcanic sand setting with special adjustments to operation parameters to cope with the most extreme conditions.

The prototype I had in San Diego in October 2018 hit a buried nickel easily at 17” on Coronado beach with heavy stripes of black sand. The same spot with my Equinox - a very capable multifreak VLF - made about 8”. That was in Beach 2, Beach 1 was too noisy.

Folks with white quartz sand may not find the AQ to be so dramatically superior to VLF multifreakers, need more folks out using them to tell.

Lots of good info on the AQ’s capabilities in mineralized ground is in this thread here on this forum:

 

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It will be interesting to see how it handles NZ's black sand beaches, a majority of the North Island beaches are volcanic black sand, and we don't mess about... when I say black said I mean black sand.  Reports from some Tarsacci users say it works OK on the beaches here. and a GPX works OK, nothing overly excels and if discrimination could be used and work well it would be very interesting. 

A good detector for black sand beaches would be perfect in NZ, North Island is where the population density is higher, the beaches are busy as the climate is much warmer and the black sand has prevented people finding the good stuff.

fixedw_large_4x.thumb.jpg.6aae0e5eceb8e06e44c8b3eaf01f655e.jpgKarekare-Beach-New-Zealand.gif.790de31c80f594c3368ece3bfd465d6e.giflooking-down-on-the-hidden-mokau-beach-access-road.thumb.jpg.d6fdefba0cda8eaedc4ee6f6f19f166f.jpgnew-zealand-black-sand-piha-beach.jpg.17a197288f9a594b50631626b6196bfc.jpgthe-epic-jet-black-all-black-sand-at-mokau-beach.thumb.jpg.3fbedeaf6ed79b966a8c7480d5ae3706.jpg

I'm in the process of adding beach detecting to my list of hobbies, so suddenly this Fisher is starting to get interesting.  I'd still prefer a prospecting version.

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Simon, those look like the beaches from the Reunion Island test.

1.jpg

More details on Reunion Island test

Just a FYI for folks. Just because a beach (or stream bed) is black in color does not mean it has a high magnetic content. A beach may simply be derived from a dark rock, like black shale, which could have a low magnetite content. “Black sands” is a specific mining term that relates more to magnetic mineral content than the actual color. Magnetic sands are almost always black in color, but all sands that are black in color are not necessarily magnetic in content.

Notes on PI detecting and beaches

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16 minutes ago, Steve Herschbach said:

Simon, those look like the beaches from the Reunion Island test.

I looked that up at the time when that thread was posted thinking it might be alright for the South Island beaches as they looked rather black sandy but then they're not overly like the pure black of the North Island NZ beaches.  They look darker when wet on Reunion Island but if you google photos of their black sand beaches when dry it's very different.  The photos they took may have been after rain.

P4091660.thumb.jpg.3f98a47e58140c38d4bc46e2aaa71e9c.jpg

The photo above is a Reunion Island black sand beach, that's not dissimilar to a South Island of NZ beach and I've struggled on a few South Island beaches with it shutting my Nox down to an inch or two depth, the North Island black sand beaches are insane, pure black sand.  Wet or dry they're black and all the grains stick to a magnet, some beaches even have really chunky grains and others extremely fine.   While not dismissing the Reunion Island black sand testing I'd still like to see the performance on those crazy NZ beaches.  If the Impulse handles that I'd be buying one as I know those beaches would be good hunting grounds due to just how busy their beaches get, if they could be opened up with a good working detector.

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Also, the black sand beaches here are iron sand, not black coloured sands like some beaches that look black, again not saying that about the Reunion Island as it is black sand. 🙂

https://www.nzsteel.co.nz/sustainability/the-mining-operation/

The well known black sand beaches sweeping down the west coast of the North Island are the sites of New Zealand's greatest known reserves of ironsand. Its potential for commercial use was recognised from the early days of European settlement. This black ironsand was formed 2.5 million years ago from rock deposited on the coast by volcanic activity in the Taranaki region. The sand contains mainly ironsand (titanomagnetite) and lime-soda feldspars. Over the centuries, the heavy dark ironsands have been transported by ocean currents along the coast and deposited on beaches, forming dunes of up to 90 metres high. After extensive trials, the New Zealand Steel Mill at Glenbrook opened in 1970 with an ironsand mine located at the mouth of the Waikato River.

908539850_miningblacksand.thumb.jpg.dd71103233b4507aee4886f97b5d3ced.jpg

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For folks who don’t check out the Reunion thread, they had and AQ and an Excalibur. The AQ found a bunch of gold rings in the space of a week. Alexandre’s  email report of the trip stated that the Excalibur couldn’t detect a gold ring on the surface of the sand - (he said “above” the sand, but he meant on the surface - darned Google translate!).

The sand from Reunion is the same stuff used in one of the bags in the now well known first video of the “Manta” at Hardelot beach in France.

You have probably all seen it, bit in case not, here’s a link to my Vimeo site where I parked a copy with titles in English.

The capability to cancel the salt while penetrating highly magnetic soil is very impressive. It remains to be seen how many beach hunters will find it superior on their beaches.

Meanwhile, lots of folks will be tempted to try it on inland sites and I expect that as a relic machine it might be really powerful. Culpepper VA for example - where folks now mostly use ML GPX machines to get depth in that terrible red dirt. We will see. It wasn’t made for that, but still....

As a nugget machine, not so much, it is designed to not detect fly speck sized low conductors - the Impulse “AU” will deal with that.

 

 

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On 5/24/2020 at 4:57 PM, Rick Kempf said:

As a nugget machine, not so much, it is designed to not detect fly speck sized low conductors - the Impulse “AU” will deal with that.

Who wants that little stuff anyway? :laugh: I’ve got a couple places the AQ is going to get used for nugget detecting. It would be fun to be the first person to find a nugget with one. I’ve got a good shot as very few people who get these will be gold prospectors.

fisher-impulse-aq-logo.jpg

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