Ground, borehole, and drone magnetic surveys

Ground, borehole, and drone surveys are used for direct detection of iron-rich minerals or for mapping geological units with variable susceptibilities. 

Applications in mineral exploration:

  • Iron ore prospecting.

  • Iron formations with associated mineralization: IOCG.

  • Chromite and manganese prospecting.

  • Sulphide occurrences associated with magnetite and/or pyrrhotite.

  • Kimberlites, asbestos & placer deposits.

  • Geological mapping of lithology.

  • Structural mapping (faults, fractures, shear zones, folds, etc.).

  • Structurally-hosted deposits (U-conglomerates, stratiform Pb-Zn).

  • Depth to bedrock to determine thickness of sedimentary section, overburden, etc.

  • Inexpensive equipment and straight forward survey procedures.

  • High resolution and cost-effective for detail or reconnaissance surveys.

  • Useful complementary data enhances interpretation of other geophysical surveys.

  • Highly sophisticated processing and interpretation tools.

  • Weak and ambiguous responses at low latitudes.

Technical specs:

  • The total field can be measured in continuous mode (every second) or at each station.

  • A magnetometer with integrated GPS simultaneously records the exact position and the total field by foot, boat or all-terrain vehicle. 

  • Measurement of the total field (Hx, Hy, Hz).

  • Can be combined with other sensors. 


  • Color cards for contours and profiles.

  • Total field vertical gradient.

  • Second derivative derived from tilt.

  • Analytical signal.

Innovation: AeroVision Drone-MAG (Airborne Geophysics)


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