Underground Gold detector For Indian Soils

[khan]

Dear All,

Looking for Underground gold detector specially for the buried gold (coins, jewelry & gold bar etc,) expected quantity varies from 1/2 kilo to 10 kilo at the depth of 12 to 15 feet.

Required specifications (as per my littler knowledge)

1) 3D
2) Minimum depth 15 feet (if possible)


Please suggest me the best quality gold detector which fulfills my requirement

[kt315]

with holy mantra from holy book Quran on your lips you can seeking 3D and 15 feet depth.
without device you do not need in it.

[Andi68]

Or try a LRL

[Ferric Toes]

Dear All,

Looking for Underground gold detector specially for the buried gold (coins, jewelry & gold bar etc,) expected quantity varies from 1/2 kilo to 10 kilo at the depth of 12 to 15 feet.

Required specifications (as per my littler knowledge)

1) 3D
2) Minimum depth 15 feet (if possible)


Please suggest me the best quality gold detector which fulfills my requirement

Hi Khan,

Ignore those who are having a laugh. This is your first post and you state that you have little knowledge, so you deserve a sensible answer.

Lots of people have asked a similar question, but do not have the knowledge of how electronic detectors work or what the limitations are. There is of course the LRL (Long Range Locator) fraternity who claim vast distances, and there is a separate forum for that. LRL's are not dealt with on this forum as we concentrate on devices which operate on known and well proven scientific principles.

Detection of metal objects is possible at ranges of 12 - 15ft, but such detectors are very specialised and expensive. The type of object is very important too, i.e. there is a big difference in the detectability of, say, 5kg of gold coins and a bar weighing 5kg, which would also be different to a 5kg flat sheet of gold 5mm thick. Jewelry is difficult to predict as pins, chains, clasps and rings do not in most cases have good electrical contact with one another and even if there were 5kg of them together, you could end up with detection ranges very much less than 10ft.

In 1956, a technical paper was written by the Signal Research Establishment of the British Army and the title was 'A Pulsed Bomb Locator'. It gave the theoretical calculations for a device that could detect a 100lb (45kg) bomb casing at a depth of 45ft. Although the theory is there, we would struggle today to achieve that depth, but we might achieve half with a specialised device.

A high power PI detector was made in 1982 for detecting 70lb silver bars from a Spanish galleon wreck and the hope was that one bar could be detected at 15ft. It could just about be done with a 42in square coil and powering the detector with 5 car batteries in series to give 60V.

Much will also depend on the nature of the soil in the part of the country where such a detector would be used.

Detectors that may go some way to achieving the detection ranges you are wanting is Superscan Mk2C, or Lorenz X5. Be prepared to do some research and don't rush into buying a detector purely on manufacturer's claims.

Eric.

[green]

Hi Khan,

Ignore those who are having a laugh. This is your first post and you state that you have little knowledge, so you deserve a sensible answer.

Lots of people have asked a similar question, but do not have the knowledge of how electronic detectors work or what the limitations are. There is of course the LRL (Long Range Locator) fraternity who claim vast distances, and there is a separate forum for that. LRL's are not dealt with on this forum as we concentrate on devices which operate on known and well proven scientific principles.

Detection of metal objects is possible at ranges of 12 - 15ft, but such detectors are very specialised and expensive. The type of object is very important too, i.e. there is a big difference in the detectability of, say, 5kg of gold coins and a bar weighing 5kg, which would also be different to a 5kg flat sheet of gold 5mm thick. Jewelry is difficult to predict as pins, chains, clasps and rings do not in most cases have good electrical contact with one another and even if there were 5kg of them together, you could end up with detection ranges very much less than 10ft.

In 1956, a technical paper was written by the Signal Research Establishment of the British Army and the title was 'A Pulsed Bomb Locator'. It gave the theoretical calculations for a device that could detect a 100lb (45kg) bomb casing at a depth of 45ft. Although the theory is there, we would struggle today to achieve that depth, but we might achieve half with a specialised device.

A high power PI detector was made in 1982 for detecting 70lb silver bars from a Spanish galleon wreck and the hope was that one bar could be detected at 15ft. It could just about be done with a 42in square coil and powering the detector with 5 car batteries in series to give 60V.

Much will also depend on the nature of the soil in the part of the country where such a detector would be used.

Detectors that may go some way to achieving the detection ranges you are wanting is Superscan Mk2C, or Lorenz X5. Be prepared to do some research and don't rush into buying a detector purely on manufacturer's claims.

Eric.

http://www.geotech1.com/forums/showt...885#post237885

I've been trying to compare detection distances for different diameter coils(chart above). Thought I would try a 14inch diameter coil(a coil I would like to wind next)to compare with the 42inch square coil in your example above. I've found odd shaped coils have similar signal strength with round coils if coil circumference is the same so I used a 53inch round for the 42inch square with Hyper Physics. Assuming everything remains the same except coil diameter. To detect the silver bar at 15ft with a 53inch round coil the 14inch coil would have to detect it at 6.1ft(same number of turns) or 7.7ft(same inductance). Do you remember the approximate number of turns and peak coil current you used to detect the bars? Not certain the calculations are correct.

[Tim]

For large targets at less depth you could try a two box (Fisher Gemini, Whites TM808 ), or a Delta Pulse/XR71 with the 1m x 1m coil.

[Funfinder]

This is the typical:
'I wanna find gold and you are the experts so tell me which is the best detector!' post
but it should not be a cheap opportunity making fun out of these who have a problem!

Give khan a clear answer like "not possible to detect" and don't play ridiculous jokes he
can't understand because he has no idea about MDs and how deep they detect or not!

At least some here don't just seek for cheap entertainment at the costs of MD-rookies!



Anyway - khan - listen:

12-15 feet is not that deep for MDs but as already described it depends a lot on soil and shape of the find(s).

If this gold is together with larger iron parts (box, chest etc.) you even can find it with a cheap magnetometer!

What also counts is if there is electro-smog nearby and if the ground mineralization is low, high or changing!

First step is to narrow the search-location, second is to try out if you can find there something at all
and third will be to improve, test and change your equipment if it's not good enough.

First step also means to be sure at the location where you search is anything at all!
Too many fancy stories about lost treasures, too many rumors and fairy-tales!
Instead of becoming rich many treasure-hunters are losing a fortune just because of that.
While chasing an illusion!


Technically seen the best bet you will have with professional equipment:

Detectors which have a 1m coil like the DeepHunter or PI, magnetometers if the gold-cache is mixed with iron,
GPR and special 2 box systems where you can place each of the coils at least 10 feet away from each others.

The investment for you will be at least 2000 US-dollars for second hand detectors up to 15.000
for the profi-equipment. Not to forget about mini-excavators and helpers if this stuff is deep.

https://en.wikipedia.org/wiki/Ground-penetrating_radar
http://nouedu.net/sites/default/file...-03/PHY461.pdf
http://www.uvm.edu/~lewebb/CCLI/Manu...cs%20Guide.pdf

[Davor]

Terrains around Mumbai are red from the ancient caldera nearby. Whenever you see red soils, it is an indication of iron in the soil, and such terrains are quite a bit more difficult to search.