magneometer & non magnetic

[mustefa ubram]

hi
I built a magnetometer that revealed small magnet from a distance of one meter.
How the to find will help magneometer non-magnetic metals?

[Mike(Mont)]

I think I see where you are getting at being gold is diamagnetic. Never used one and never heard of one being used to find gold as some sort of anti-signal so can't help you there and don't take my word for it, but I've heard a mag can detect magnetic black sand. Then pan for gold or metal detect.

My two cents here is I would think a small amount of gold is not going to be able to create any kind of anti-signal on a mag. It would just be overwhelmed by everything around it. But then again, i don't know.

[Mike(Mont)]

Maybe you can send Carl or Q a private message to get their attention. I'm sure they can tell you.

[WM6]

Originally Posted by mustefa ubram

hi
I built a magnetometer that revealed small magnet from a distance of one meter.
How the to find will help magneometer non-magnetic metals?

Magnetometer does nor sense material (Ferrous or Nonferrous) but Earth magnetic field anomalies caused by some materials (mostly Ferro-magnetic metals).

Your small magnet causes anomalies in Earth magnetic fields - no doubt.

[mustefa ubram]

Originally Posted by WM6

Magnetometer does nor sense material (Ferrous or Nonferrous) but Earth magnetic field anomalies caused by some materials (mostly Ferro-magnetic metals).

Your small magnet causes anomalies in Earth magnetic fields - no doubt.

wm6
Think you magneometer can hunting the presence of metal in the ground?(magnetic or non magnetic)?

[WM6]

Originally Posted by mustefa ubram

wm6
Think you magneometer can hunting the presence of metal in the ground?(magnetic or non magnetic)?

Yes, but not in direct way.

Magnetometer can sense metals in indirect way, mean how much are some metals able to make anomalies in Earth magnetic field. Magnetometer detect anomalies in Earth magnetic fields and no metals per se.

Ferromagnetic metals as iron, steel etc. make very sensible disturbances in Earth magnetic field and are this way easy detectable by using magnetometer.

On other side noble metals as silver. gold, copper almost do not imply in Earth magnetic field lines and are almost not detectable by magnetometer. Only bigger deposits of noble metals are able to make sensible anomalies in Earth magnetic field lines on very similar way as par example underground cave , bigger holes and tunnels can do.

[Mike(Mont)]

Here is part of an old post by Dell Winders dated My 31, 1996.

"... If the sensitivity of the present day magnetometer were increased 300 times it would be sensitive enough to measure the weaker magnetic distortions that are generated by non-ferrous metals and minerals..."

[WM6]

Yes, but there is no easy way by simply increasing sensitivity (gain) of magnetometers.
Applying higher sensitivity, we are in field, where soils anomalies react very similar to anomalies caused by noble metals and we are going to dig a lot of empty holes.

Best is to use magnetometer as checking means, if very deep targets, detected by regular detector (in most cases PI), are ferrous or non-ferrous. Very nice and useful combination.

[brs]

Is it necessary to be ground moist all the sense patchwork of damp earth is easier said magnetic anomaly detection

[WM6]

More important for accurate magnetometer results is that ground/soil is homogeneous (no big deviations in structure/composition), than if it is wet or dry.