The field of metal detection and treasure hunting comprises technical terms and definitions that successful treasure hunters should know. This glossary lists some of it:


An archaeologist is a scientist/historian that studies human culture and history through the recovery, documentation and analysis of historical artifacts and remains of former civilisations hidden under the ground.

Ferrous metals / Non-ferrous metals

Ferrous/non-ferrous is a way to classify metals by iron content. Ferrous metals contain iron while non-ferrous metals do not contain iron. The word ferrous is derived from the Latin term ‘Ferrum’ which means ‘containing iron’, thus ferrous metals contain iron and non ferrous metals do not. Ferrous metals may be pure iron, like wrought iron, or they may be alloys of iron and other elements. Steel, being an alloy of iron and carbon, is therefore a ferrous metal. The iron in the ferrous metals cause the metal to rust, unless painted or oiled often, or if it is galvanized (plated with zinc) or chrome plated.

Fighter plane

A fighter plane is a military aircraft designed primarily for attacking other aircraft, as opposed to a bomber, which is designed to attack ground targets, primarily by dropping bombs. Archaeologist, scientists and historians are using geophysical instruments and metal detecting instruments to locate crashed airplanes and parts of airplanes hidden under the ground.


Flagstone is a type of flat stone, usually used for paving slabs, but also for making fences or roofing. It may also be used for making memorials or headstones in a cemetery.


Gold is a highly sought-after precious metal which, for many centuries, has been used as money, a store of value and in jewelry. The metal occurs as nuggets or grains in rocks, underground ‘veins’ and in alluvial deposits. It is one of the coinage metals. Gold is dense, soft, shiny and the most malleable and ductile of the known metals. Pure gold has a bright yellow color traditionally considered attractive.

Gold bars

A gold bar is a gold ingot which may be produced in many different types, weights and categories. The treasure much asked for.

Gold detection

Gold detection is the research for buried gold, no matter if gold bars, gold coins, gold rings, gold nuggets or other gold objects. Specially interesting for a gold seeker is the possibility to discriminate between different types of metals with his metal detecting instrument to find out if there is a valuable target under the ground or not.

Gold nugget

A gold nugget is a naturally occurring piece of native gold. Watercourses often concentrate the nuggets and they are recovered by placer mining, but they may also be found in residual deposits where the gold-bearing veins or lodes have decayed. Nuggets are also found in the tailing piles of previous mining operations, especially those left by gold mining dredges.

Gold prospector

A gold prospector is a person looking for gold using a metal detector or other metal detecting instruments.

Gold prospecting

Gold prospecting is the act of searching or digging for gold in rocks or in stream beds with appropriate equipment. Gold prospection usually refers to individual persons or private groups, as opposed to workers in professional mining companies.

Ground Scan

Ground Scan is the operating mode where the searcher is able to receive a 3d image of the underground by scanning an area. The searcher has to walk over the ground with an antenna to scan an area. So it is possible to visualize the underground and its anomalies. In the mode Ground Scan it is also possible to measure the position, depth and size of underground objects or voids.


Jewelry (also spelled jewellery) is a personal ornament, such as a necklace, ring, or bracelet, made from gemstones, precious metals or other materials. Jewellery was often made for people of high importance to show their status and, in many cases, they were buried with it. That is why grave and tomb detection became important for many treasure hunters hoping to find the buried jewellery.

Made in Germany

Made in Germany is a merchandise mark indicating that a product has been manufactured in Germany. The term “Made in Germany” is associated with and renowned for product reliability, quality and perfection.


A magnetometer is a scientific instrument used to measure the strength and/or direction of the magnetic field and their disturbances. So it is possible to locate buried targets. Magnetometers are used in geophysical surveys to find deposits of iron because they can measure the magnetic field variations caused by the deposits. Magnetometers are also used to detect archaeological sites, shipwrecks and other buried or submerged objects. Magnetic anomaly detectors detect submarines for military purposes. The Magnetometer mode of FS Future Series devices mostly is used to locate ferrous objects which are located near to the surface of the ground. This function is very usefull to eliminate small trash from the surface and in fact prepare the scan area for a professional measurement in the Ground Scan mode.

Measuring instrument

A measuring instrument measures the anomalies of the underground. So it is possible to locate buried objects, underground voids, water deposits or foundations which are located under the ground.

Metal Detecting / Metal Detection

Metal detection is the research for buried metals under the ground. Archaeologists, gold prospectors, treasure hunters are mainly detecting for valuables and metals like gold and silver.

Metal Detector

A metal detector can locate objects which are buried below the surface. It is used to find underground targets without the need to dig. A metal detector can locate all types of metals like gold, silver, copper, aluminium, iron objects and further valuable targets. The indication of a detected object can be an acoustical signal, a visual signal on a digital display or on an analog display, a visual signal via lamp or an image or graph. Metal detectors are used to search for hidden metals under the ground. Most treasure hunters are equipped with metal detectors to look for buried precious metals such as gold, silver and cooper and other metals such as iron and aluminium. There is a huge range of metal detectors on the market, starting from simple metal detectors up to the upper class of metal detectors and high professional metal detectors.

Metal Discrimination

Metal discrimination offers the possibility to determine the types of metals which are buried under the ground. There is a regulator on the antenna or device, which can be adjusted on a specific type of metal like gold, silver, iron or aluminium. The metal detector filters out all materials which are not intended to be detected. This feature prevents the treasure hunter, who is only searching for precious metals, from useless digging. Some antennas can discriminate between ferrous and nonferrous metals, other antennas are able to determine the exact type of metal.


A meteorite is a natural object originating in outer space that survives an impact with the Earth’s surface. While in space it is called a meteoroid. When it enters the atmosphere, air resistance causes the body to heat up and emit light, thus forming a fireball, also known as a meteor or shooting star. Today there are more than 31,000 well-documented meteorite finds. Metal detectors can be used to locate such meteorites hidden under the ground. There are 3 different types of meteorites: stony meteorites are rocks, mainly composed of silicate minerals; iron meteorites are largely composed of metallic iron-nickel; and stony-iron meteorites contain large amounts of both metallic and rocky material.

Lost Treasure

Lost treasures are treasures which are still waiting to be discovered. They can be sunken treasures (under the sea, inside shipwrecks), buried treasures (pirate treasures, beach treasures) or hidden treasures (historical treasury, tomb and grave treasures). Lost treasures often are considered lost or forgotten until being rediscovered.

Pirate treasure

Pirate treasures are stolen treasures by pirates in former times. Pirate treasures are mostly located on beaches. Often pirates buried their collected treasures in boxes or chests (mostly coins and jewelry) on a beach to hide them from others and to come back one day, to get them. Most of these treasures still wait to be excavated.

Precious metals

A precious metal is a rare metallic chemical element of high economic value. Precious metals are all non-ferrous metals such as gold, silver, copper. These are the most valuable metals which most treasure hunters looking for.


Treasure is a concentration of valuables, often considered lost or forgotten until being rediscovered.

Treasure hunter

A treasure hunter is a person searching for buried treasures. Professional treasure hunters use geophysical instruments, metal detectors or ground penetrating radar to research an area of interest.

Treasure hunting

Treasure hunting is the search for real treasure which has been a notable human activity for millennia. Professional treasure hunters are well equipped by various of professional treasure hunting devices.


Ultrasound or ultrasonic technology is a measurement procedure in which high-energy sound waves (ultrasound) are bounced into the ground. Some measuring instruments use ultrasonic measuring methods to visualize the underground structures and create a live image of the underground.