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Magnetic-susceptibility

The RG magnetic-susceptibility probe is based on the industry-standard Bartington Instruments™ product. It is a low-frequency device and is specifically designed for mining applications. The probe has excellent stability against pressure and temperature variations.

Principle of Measurement:

An oscillating magnetic field in the probe produces a current within a toroidal zone in the surrounding formation. The oscillating current produces a secondary field that is detected by the receiver coils. The ‘in-phase’ signal is a measure of susceptibility.

Features

  • Operates in dry or water-filled boreholes
  • Unaffected by plastic casing Ideal for use in small-diameter exploration boreholes
  • Excellent thermal/pressure stability across specified operating range

Measurements

  • Magnetic susceptibility
  • Natural gamma

Applications

The probe finds particular use for uranium where the log shows a negative correlation with uraniferous compounds. Susceptibility logs are highly sensitive to iron and show large contrasts according to itsoxidation state. The frequent occurrence of iron with other redox-sensitive metals can provide a valuable indicator of the presence of other minerals.

Specifications

Diameter: 43mm
Weight: 8kg
Temperature: 0-70⁰C (extended ranges available)
Max. pressure: 20MPa
Operating frequency: 1.439kHz
Range: 10-5 to 1cgs

Operating Conditions

  • Borehole type: open/cased (plastic), water/air-filled
  • Centralisation: fin stand-off recommended

Sales Information

I002095 Magnetic susceptibility with natural gamma probe

 

Download Magnetic-susceptibility sheet

Support

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Robertson Geologging Ltd., 2017

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