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Magnetic Mineralization Indicator
The Magnetic Mineralization Indicator consists of 5
levels. The indicator is shown empty at low mineral levels
during search and at start up. In areas where the
magnetic mineral level is high, the indicator level
increases according to the intensity. This measurement
can be summarized as the level of magnetic property
and intensity of the ground. Simply, if you are working in
an area which contains intense and magnetized minerals,
the level will be high. If you are working on a less intense ground, the level will be low.
This measurement is important from two aspects. First, on grounds with high magnetic
mineralization, search depth is low and users should be aware of this fact. Second,
magnetic mineralization is a property which is particularly seen with mineralized rocks and
this measurement plays an important role for the device to eliminate the false signals
produced by these rocks.
Rocks and Searching in Rocky Terrains
Challenging ground conditions arise especially when conductivity and magnetic
properties of the ground is too intense. Operation of the device over such ground is made
possible by selecting the best operating mode and using proper ground balance, gain and
threshold settings.
Stones and rocks or cavities inside the ground are as important as the ground itself in
regards to the search and target detection quality.
Soil and rocks have two different properties just like the targets you are searching for. One
of them is the intensity and the other one is the conductivity - magnetic permeability ratio
and these two properties are independent from each other. In this manual, the
conductivity - magnetic permeability ratio will be referred to as ID in short. High magnetic
permeability, low conductivity results in low ID. Soil or rocks can be highly permeable and
have low or high IDs as well. If the conductivity increases relatively to magnetic
permeability then the ID will also increase.
Hot rocks are classified as negative or positive based on their ID being low or high in
comparison to the ID of the soil they are in. One or both of the types may be present in a
field. The negative and positive effects mentioned here will only be valid if ground
balancing is properly done on the existing ground. Otherwise, soil itself will not act
differently from hot rocks in terms of ID. In ''TRACKING'' however, conditions will differ.
Therefore, the effects of rocks in ''TRACKING'' will be discussed separately. Here we are
referring to a proper ground balance without ''TRACKING''.
Positive rocks act just like metal and produce a metal sound. In the All Metal mode they
produce a “zip zip” sound when the search coil is moved over them. If the signal is strong
enough, the device may produce an ID for these rocks. Negative rocks in the All Metal
mode, produce a long “boing” sound when the search coil is moved over them. The device
does not give an ID for these rocks even if the signal is strong.
Positive rocks provide a typical metal sound in discrimination modes. Negative rocks do
not provide a sound in discrimination modes (except for rare cases of false signals).
