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Can You Use a Metal Detector to Find Gold?

Can You Use a Metal Detector to Find Gold?

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Can You Use a Metal Detector to Find Gold?

Can You Use a Metal Detector to Find Gold?

A question asked by many of the people interested in detecting gold,

whether raw natural gold or buried gold such as coins and ornamental jewelry such as rings.

The simple answer to this question is: Yes, you can use a metal detector to find gold

because gold is a metal but with specific properties.

In general, a metal detector can detect all types of metals, which are classified into two types,

which are ferrous or magnetic metals such as iron, and the second class is non-ferrous

or non-magnetic metals, and within this classification falls gold, silver, copper and aluminum…

Thus, a metal detector can be used by prospectors and treasure hunters to detect gold

and golden burials and golden treasures such as statues, swords, jewelry and natural gold nuggets also.

In this article, we will explain the principle of the work of the traditional electromagnetic metal detector

also called handheld metal detectors, which is the most widespread type, which depends

on the search for metals on the so-called search coil, and we will explain the mechanism of work

of these coils and how an effective search coils can be made for the detection, with practical examples

of various devices and explain the mechanism of detecting gold in these devices and how prospector

know that it find gold not another metal.

What is a handheld metal detector?

Metal detectors devices differ and vary in search technologies and other features

such as maximum search depth and bundled accessories and comes in many

different shapes and with wide range of features and prices from hobby devices to professional machines.

Read more in following article: Types of Metal Detectors

One of the most common types of metal detectors among prospectors,

especially beginners and amateurs, is hand-held or electromagnetic metal detectors,

as there are dozens of devices from various well-known companies in this field,

such as the American Garrett company, the American Fisher Labs, and the Turkish company Nokta Makro.

Examples of handheld metal detectors: Garrett ACE APEX, Impact Pro, Fisher Gold Bug Pro

How a metal detector work?

Electromagnetic metal detectors works according to one of two search technologies.

: Very low frequency (VLF) or pulse induction technology (PI), which depends on a search coil

used to detect the presence of different metals such as gold, silver, copper,  within the search area

below the search coil, The signals received by the search coils are converted into digital signals

that are represented by a number on the screen of the device and called the digital target ID

indicating the type of target, or the presence of the metal target is known through an audio

tone issued by a built-in speaker in the device, and in some devices different tones can

be assigned to different types of metals.

A Metal Detector Working Principle

The principle of how a metal detector work is very simple,

Metal detector device transmit a magnetic field via its search coil using sender coil,

this magnetic field is as a result of electric current flowing through built-in coils inside search coil.

When a magnetic field hit any buried metal object underground such as a golden coin.

When the electromagnetic field collides with a metallic object, the metal target

absorbs part of the signal and returns a reversible electromagnetic field.

The other coil called the receiver coil receives the field signal and converts the difference

between the two fields into a digital signal transferred to the control unit (system box)

of the device for processing and filtering , the output will be a number called target ID

displayed on display screen that present the target type or metal type .

Also an audio output based on target type is heard via built-in speaker or wired or wireless headphones.

Read more details here: How a metal detector works?

Can You Use a Metal Detector to Find Gold?

From the review of the principle of the work of metal detectors, we conclude that the device

can detect any type of metals, including gold of course, because gold is a metal with a good

conductivity of electricity and in general, the longer the gold buried, the more explored

by the metal detector.

There are also some metal detectors that are specially designed to detect gold, whether natural

gold ore or treasures of gold buried hundreds of years ago and we mention some of them for example:

– Natural gold detectors such as Gold Kruzer

– Old Buried gold detectors such as: Pulse Nova

 

How Metal Detector Coils Work

Metal detectors depend in their work on the search coils, which is an oval, solid or hollow plastic disc,

inside which the copper coils that wrap around it are placed, and usually there is a pair of coils,

one of which acts as a transmitter and the second as a receiver for electromagnetic signals.

The electric current is fed in sender coil causing in generating a magnetic field transmits to the area

surrounding the search coil via an oscillating electromagnetic field.

When this field comes into contact with a metal object such as golden coin, its shape is altered.

This change in magnetism is detected by the receiver coil, which sends a signal back to the electronic circuits

inside the metal detector, causing a sound that notifies the user of the presence of metal.

 

How to Build Metal Detector Coil

Simple search coils can be built using simple household tools

available at any specialized electronics store.

As the manufacturing of search coils is very simple and inexpensive, as it includes

simple elements that include copper coils and a plastic plate of two upper and lower

layers with a connection to connect the two coils to the disk cable that connects to

the main unit of the metal detector within a special port that transmits signals through it.

You can find out more on following link: how to build metal detector coil

Can You Use a Metal Detector Underwater

Yes, metal detectors can be used underwater, but not all devices are designed to detect metals

under the water surface, rather there are only certain devices.

Some of these devices are completely waterproof so that the whole device, including the main unit

and disk, can be submerged under water and can be submerged to a relatively good depth

of up to 3-5 meters, depending on the device, in order to discover burials and treasures.

Example devices includes: Multi Kruzer , Anfibio

In other devices, only the search coils are waterproof, so the device can be used near the

shores of rivers, seas and lakes at shallow depths only for depth about 1 meter underwater

Example devices includes: Impact Pro

Read following article for full details: Underwater Metal Detector

How to Use a VLF Metal Detector

The method of using a traditional metal detector (VLF metal detector)

is very simple, and we summarize it in the following steps:

1- Assemble the device by connecting the main unit, the arm stand,

the plastic and aluminum arms, then connect the lower arm

to the search coil and connect the coil cable into its port inside the control unit (system box)

2 – Switch on the device and adjust its settings using the control panel and choose the appropriate search mode

3 – Make the ground balance manually or automatically in order to adjust the device according to the terrain

4- Move the search coils in slow, back and forth movements over the area

5 – Continue moving and walking slowly until you get an appropriate sound signal that indicates the presence of a metal target

It is important to keep the search coil in a horizontal position parallel to the ground and at a constant height of about 10-15 cm

Can I Use My iPhone as A Metal Detector

The answer depends on the purpose of use..

Theoretically, the iPhone can be used as a metal detector by downloading a special metal detector application (app)

that uses the magnetic sensor in the iPhone device to measure the changes in the magnetism around the device

and convert it into signals displayed on the device screen within the application.

In practice, however, this process is imprecise and functionality is limited as the range does not exceed a few centimeters,

and this is impractical in uncovering valuable treasures and burials.

Therefore, we advise a serious prospector to buy a specialized metal detector in order to search for gold,

treasures and coins, and remember that your purchase of the device is a profitable investment of money in the long run

Can You Use a Metal Detector to Find Gold?
Can You Use a Metal Detector to Find Gold?
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