Strong signal from Ferrite

[Geo]

Hi
Last days I deal with the discovery of small treasure. I use L Rods or the generator with the rods. I located a point that also the two precedents shows me the existence of gold. Yesterday I used electrostatic field detector (it is use a long ferrite) and saw a strange phenomenon. In the particular space it gives me a very strong signal with direction from west to east. The same signal I take if I am moved 200m roughly left or right (north to south). I supposed that they is some magnetic field of ground and thus I went roughly 2 km more far. The detector does not detect any signal. Changed a lot of places once again the detector does not detect nothing.I went again in the particular point, and the detector again gave me a very strong signal.
Exists case the signal emanates from the treasure that I search? Can a small treasure of 1000th 2000 coins create a so much strong field and in so much big distance
Regards