Hi Qiaozhi,
Apparently you have not read Carl's intro post in this forum, or the web pages I posted as a reference to gold ions in the ground. Otherwise you would not be asking me to correct you if you are wrong:
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Originally Posted by Qiaozhi
My reason for querying this line of discussion is because this is the Remote Sensing forum, and I'm not sure whether this has any relevence to LRLs. Correct me if I'm wrong, but...
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If you read Carl's intro post at the top of the Remote Sensing forum, you will find it is not an LRL forum, but includes scientifically viable methods as well as the less scientific method of "long-range locating"
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Originally Posted by Carl-NC
The term "remote sensing" is used to describe scientifically viable methods of detecting geophysical anomalies from a distance. It is also used to describe the less scientific method of "long-range locating", which is engulfed in controversy.
This forum is for the open discussion of either method. ...
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So how do ions and gold-eating microbes have anything to do with remote sensing?
The answer quickly becomes apparent to those who read the reports in the links I posted. After reading these reports, you will be able to see how scientists have been successful in locating gold and other ores quite some distance from the locations they take the samples. In these reports you will see they are locating buried gold more than a few meters depth. Many of the gold mines where MMI surveys are made are finding gold over 2000 feet deep in locations indicated by these gold ion anomalies at the surface. The majority of the gold is found at much shallower depths. But all the testing with the MMI method is capable of finding gold at depths greater than any conventional metal detector could. The gold-digesting microbes are also marking spots where there is gold out of the reach of conventional metal detectors. Thus, these are classified as a "remote sensing methods".
I am at fault for not considering you are not a chemist, and therefore not qualified to make comments on any of this research. Your distinguished chemist friend's comments may prove helpful. In the meantime I suppose we must confine this discussion to laymen in geochemistry and electronics as you see posting above.
Thank you for your input, and best wishes,
J_P