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Annex 2 – Example of a resistivity/chargeability profile using SCIP Tester data
We can note that when the resistivity increases the chargeability increases also. In certain
conditions it is useful to calculate a normalized chargeability. This normalization is the metal factor,
MF. The MF parameter is the ratio between the chargeability and the resistivity. For a high
chargeability with a low resistivity the ratio increases allowing a better discrimination to define
metallic mineralization (graphite). However, metallic minerals (sulfides) are often disseminated
with a high chargeability corresponding to a high apparent resistivity, in which case the MF
parameter is less useful. The metal factor generally used is MF = M *1000 / Rho.
Instrumentation GDD Inc.
2018-09-18
Page 71
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