mn90403

Going to that thread made me think of time travel.  We are observing the same responses with newer technology.

A few years ago I got a couple of scoops from beachscoops.com or something like that out of Miami.  The price was reasonable.  They are all stainless.  I didn't know they were being shipped from Lithuania.  After a couple of months I didn't get them and I emailed the seller.  He said his shipper had sent them to the wrong address and sure enough about two weeks later I got them.  They were labeled as muffler parts for import purposes.  

They are that sturdy.  I have a picture of one of them.  It weighs 4 lbs and has a 6.75 x 6.0 " basket with a 42 inch handle.  It will pry out all wet sand!

On 6/13/2020 at 6:12 PM, Steve Herschbach said:

Seriously, after digging holes in tailing piles day in and day out, junk for days on end for a nugget or two, beach and water detecting is a literal walk in the park. Digging in sand... what a treat!

I have abandoned the dig on many targets in the wet sand because the hole fills too fast and my arms just won't let me get the target.  Granted this was not with my best digging tool but this was also years ago as well as recently.  I can slow down and keep digging on a desert but not in a wave.

1 hour ago, phrunt said:

For someone who doesn't regularly gold hunt and looks for jewellery I can't help but think this same set of behaviour must happen with deep and or small jewellery.

I personally don't like F2 even for coin hunts, and I often coin hunt in all metal unless conditions make it too annoying.  Perhaps this is from my gold hunting but I get annoyed with filtering, notching is also something I don't do often as I hate the blanking.  Be very careful with F2 making decisions on target digs, use it if you have to, not unless you need to.

Simon,

I have mentioned this several times in my hunting.  I turn up my T1 volume which includes ferrous and have found GOOD targets that were on the deep and lateral fringes when I first heard them.  This keeps the blanking away from my headphones even more.  When I interrogate a target with swings I don't ignore it just because it is negative.  In the sand at my beaches there are times when I lose it or it is just the iron in the sand but I can tell the targets better with the 11" coil on F2 0 better than I can with the 15" coil.

The last couple of trips for me to the beach I used the 15" and there are just not that many targets.  I know because I see other detectorists going long distances between targets.  The 15" picks up some additional 'noises'  so I GB and push up the F2 to 4 to make it more stable at my sensitivity of 23.  This doesn't always work and I have to lower the sensitivity but I feel like I'm losing fringe targets.

I like the 11" coil on the Equinox best of all.  I can dig 15"+ on some targets but I'm wondering if an AQ will brighten up these targets even more or if it will only be gold.  I'll use it in all metal and bring out my massive scoops!

Mitchel

It would be nice to see how it will perform on the California beaches that have black sand lines.  And of course I wonder about the fringe of just how far laterally it will pick up a target.

If Joe shows a target 20" deep then I would 'think' that you could see 12" on either side (not from the center) of the coil.  Results will show up soon on that one also.

Joe,

It looks like you are going to have a fun summer!

Here is a project that is on gold in Victoria.  It is an interesting read from the gold stand point as well as the offerings to come.

https://www.newkerala.com/news/2020/102787.htm

1 hour ago, ALEXANDRE TARTAR said:

The range of VDI with your 800 is not the same moreover it is too tight to be valid.

If you take an ingot of one kilo it will be in the upper part so it will be rejected in MUTE, detected in TONE MODE with a low tone.

These detection modes are really made for beginners, because the expert detects in ALL METAL mode and 99% of ferrous metals are easily identified with a double beep.

Ok, I like that my 'example' would be too tight.  I used it just as a quick 'analogy' because sometimes the shape of the gold (ring) will change the VDI.  I hunt all metal (horseshoe off) and some of my gold targets start out in the fringe as negative until I've dug down several inches.

I agree a more solid piece of gold will have different numbers as well as 18k vs 10k.

We'll just wait on what Steve has to say.

I will have to look at it more closely but I find some gold rings in my coin 'ranges' so those will be unseen/unheard by default?  Would there be an 'option' to hear or see those targets?

If I were to compare this to my 800 is the detect range from about 3 to 17 and everything else rejected?

7 minutes ago, ALEXANDRE TARTAR said:

I repeat :
Let us take an example, on the conductivity scale of a White's Spectrum XLT, the non-ferrous going from 0 to +94 and the ferrous 0 to -95.
The IMPULSE AQ detects all targets with a VDI ranging from 0 to 58 as being valid targets.
And the IMPULSE AQ will minimize the loss of depth on the highest VDIs. (almost 55)

It will therefore detect between 59 and  94 the targets as invalid

If your coin is at 75 it will not detect it.

 

If this is the case then this is not a 'hole' per se as much as it is a total elimination of a range of upper targets.  It would be just a reject of the top end.

I have an old 'Tiffany Type' lamp that has one of those at the top to hold the shade.

Thank you.  This is a well done, high quality video.

Steve is next on your list.  We'll be watching.

Mitchel

I was hoping for more responses but I'll give the 'answer' now.

The first answer was the 'best' answer.  Both of the targets come in at 23!

The challenge it turns out is writing the question without tipping off too much of the answer.  I had to leave open the possibility that BOTH targets would give the same VID.  There is a difference in sound when you interrogate them with swings.

The real reason I placed the question at all is ring was just a solid 23.  I can't remember silver coming in that way and I questioned it but it is .925 so I think it is shape over metal in this case.  The token probably has a lot of copper but it is also the same diameter as the ring but it will sound more scratchy.

That's a good idea but the handle on the pick I prefer now is longer than a broom handle so if I use a swing arm I either get a smaller pick or lay mine down.  A friend who has the same pick lays it down but sometimes leaves them in the field.  

Your swing arm would give maximum control to the coil which is one of the things JP stresses when detecting with the 7000.

I was detecting a beach in Southern California with the 15" coil.  Sensitivity was 22 and FE2 was 4 in Beach 1.

I found a .925 EC opal/diamond ring and a token.  Which target registered 23 on my Nox 800?

Reg,

You'll have to get some sort of bulk distribution to the states I would imagine and then have them individually sent.

Chris Ralph has a book he would like to sell to Adam but the shipping from the states to him is greater than the cost of the book.

Has E-Book distribution been successful enough at preventing unauthorized copies?

A recent nugget book with good printing quality from Reese Townes was printed in South Korea rather than the United States.  I know you probably have connections for least cost printing also if you were to use someone outside of Australia.

Mitchel

20 hours ago, Gold Hound said:

My first gold detector was the GP did well with it and never looked back.

Dale, Dale, Dale ... we're looking back with you.

Thanks for the share.  I can't think of a post you have made that is better.

Mitchel

My beach that produce so much from the day before produced practically nothing also.  One iron hoop earring and one penny for over 2 hours.  I even went to the 15 inch coil.  Sometimes things are just pitiful.

Better hunting next time.

Well done Doc.

I still don't know what to do with my long handle pick.  Maybe I would just use it as a marker until I need it.

Mitchel

The finder should see Klunker's guy to assess the rock's ability to withstand treatment or leave it as is.  A connectivity test has probably been done.

Here is a discussion we have going about largest Arizona nuggets of all time.

A quick read of the manual on page 10 explains that you turn on and off the black sand and you can adjust the salt.

This to me is a well designed manual.  I would say someone imagined the manual before they designed the screen.  You have to imagine the end product and how you are going to explain and train for its acceptance to be worth telling others about.

I wonder if there will be some advantage having both of these but it is certainly easier to understand than 'iron bias!'  haha

9 hours ago, Steve Herschbach said:

"So we started thinking about introducing this new technology to the market. What makes this detector different is that it handles salt environment, AND,,, mineralized ground simultaneously, both can be adjusted independently. This means that you can reject one or the other or both simultaneously, and this gives you the ability to swing your coil from the dry to the wet sand without changing your ground balance. If your ground balance has changed, this means your Salinity balance is incorrect.

My beaches change from wet to dry but also the wetter parts have more black sand than the upper parts and there is a line many times you detect both sides of in order to get the best targets.  I adjust my detectors to this line but it is an interesting engineering feat for someone to recognize the difference between the two and to independently adjust or turn one on and the other off.

Is it stated to be an auto on/off or is there a manual mode too?

The lecture is this Sunday.

Also, if you want to see how to identify a meteorite go to the website.

https://meteorites.ucla.edu/

The next lecture is here:

UCLA Meteorite Gallery Lecture Series

 The Meteorite Gallery is temporarily closed to the public until further notice.

Title: "Spherules in Sediment Deposits from Asteroid Impact Ejecta"

Lecturer: Dr. Frank Kyte, UCLA Cosmochemist.

When: 2:30 p.m. on Sunday, 14 June 2020.

Registration: https://ucla.zoom.us/meeting/register/tJ0ud-yppzkpH9zTgL43K75yP73wYub-w6ET

This talk will discuss formation of impact spherules and their occurrence in impact deposits ranging in age from 0.8 Ma (million years before present) to 3400 Ma.

When asteroids impact the Earth with cosmic velocities (about 20 km/sec) they release enormous amounts of kinetic energy. A large portion of this energy is transferred to the Earth's surface that results in seismic waves and excavation of a crater many times the asteroid's volume. Materials ejected from this crater are deposited mostly near the crater, but in large impacts the ejecta with the highest velocity can travel above the atmosphere and return as a global deposit. The famous dinosaur-killing impact at the K/Pg (a.k.a. KT) boundary produced a global deposit that was probably only a few mm thick. It is well known that this K/Pg layer has lots of iridium from the asteroid but its most distinctive characteristic on a macro level is that it is composed mainly of small spherical particles known as impact spherules. Impact spherules are a common feature of distal impact deposits (those deposited far from the impact site). Large impacts can melt significant amounts of crustal rocks in the impact crater, producing spherules around the crater. The highest velocity ejecta likely comes from a supercritical* "ejecta plume" composed of a mixture of crustal and asteroidal materials. As this ejecta plume expands, melt droplets will form, some condensing from a vapor, and these will solidify to form the silicate spherules common in impact deposits.

*supercritical link

Advance notice of the next lecture

Title: "DART (Double Asteroid Redirection Test): A Telescope Observer's Perspective"

Lecturer: Dr. Cristina Thomas, Northern Arizona University.
When: 2:30 p.m. on Sunday, 12 July 2020.

Registration:  https://ucla.zoom.us/meeting/register/tJwrde2vrz4tHtOUYDnw4xEBFtQrG6634bmy

DART is NASA's first planetary defense mission, which will test asteroid deflection by kinetic impactor. The spacecraft will impact the satellite of the binary near-Earth asteroid (65803) Didymos in fall 2022. I lead the DART team responsible for observing and understanding the orbit of the moon prior to and after impact. The observed orbit change will be how the team determines the effectiveness of the experiment.

We understand the orbit of the binary asteroid system using light curves, a measure of how the brightness of an object changes over time. When Didymos is close to Earth, the moon and the primary eclipse each other from the vantage point of our telescopes on the ground. Each eclipsing event causes a subtle dimming of the lightcurve known as a "mutual event". Observing these events enables us to observe the path of the satellite around the primary and predict the next mutual events. We observed the Didymos system in 2019 and have additional pre-impact observations planned for later in 2020 and early 2021. These observations will establish the state of the system before impact. We will perform similar observations in the period following the fall 2022 impact to determine the change in the satellite orbit. I will discuss how we understand the orbit of the satellite, results from our recent observations, and our future plans for observing the Didymos system.

Technical Support

Upon registration you should receive a confirmation email with login details (please check your Spam folder). If you need further instructions on how to join a meeting via Zoom click here or contact our Meteorite Manager, Natalia Campos, at ncampos@ucla.edu. This email will be especially monitored after 2 pm on Sunday.

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On this beach I often start digging negative 'fringe' numbers and they sometimes turn into good, deep targets.  I dug some of these pennies and trash at 12+ inches.  When I find the larger 'trash' objects then I slow down because a good heavy target could be near.

We like digging old tarnished quarters here.  It means a deep layer has been moved by wave energy and spit those quarters up on the slope.  Rings can be mixed with these.

7 hours ago, Skullgolddiver said:

Are u running in FE or FE2?

Just curious😤

I have it on 0 for both and I don't know which one it goes to when I check that setting.  The next time I use it I'll see if it is on FE or FE2.  The screws come in scratchy as well as the two 'foreign' coins on each side of the fake.  I turn up the volume on T1.

If this was like the 'spot' where midalake hunts then I'd be getting more gold.

Mitchel