Induced‐polarization Logging in the Search for Native Copper

Bacon, Lloyal O.

doi:10.1190/1.1439564

Cited by 7 publications

(2 citation statements)

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“…and resistance/resistivity (or conductivity) are considered as the main parameters to confer conductive zones of metallic mineralisation in electrical logging. However, electrical polarisability is also important because the occurrence of base metal deposits in a disseminated form is quite common (BACON, 1965;SMITH, 1985).…”

Section: Introductionmentioning

confidence: 99%

“…logging of underground boreholes in the footwall zones of the Osceola Mine has provided an increased sample volume to detect the presence of copper mineralisation as well as information on geological contacts useful in the interpretation and planning of mining operations. This has been difficult from drill information alone due to the small diameter sample available from horizontal exploratory drill holes (BACON, 1965). The traditional logging tools viz., resistance, natural gamma, density, neutron, etc., which were primarily developed for petroleum exploration in sedimentary rocks are less useful in base metal exploration.…”

Section: Introductionmentioning

confidence: 99%

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Simple Electrical Logging Technique for Base Metal Exploration

Pant

Gupta

1998

Pure and Applied Geophysics

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It is well known that electrical logs of boreholes can play a significant role in base metal exploration in identifying mineralised zones, especially when there is core loss or the borehole diameter is small or if drilling is by percussion. However, electrical logging is not widely utilised because of the additional burden on finances and time.A simple electrical logging technique, based on a pole-pole (hole-to-surface) configuration with one borehole electrode and nearly akin to the single point method, for S.P., resistivity and I.P. parameters, is presented. It is shown that it has the resolution of the single point method and the penetration of a very long normal sonde which is helpful for detection. Besides these features, the main advantage of this technique is that it can be easily carried out using ground I.P. (time domain) equipment.The electrical logs obtained in different base metal belts in Rajasthan, India, employing this technique and using ground I.P. equipment in connection with mise-à-la-masse surveys, illustrate the above features. A comparison with logs recorded by means of multi-electrode drill hole I.P. equipment of Scintrex, Canada, substantiates the same.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%