Typical Values for Rocks

The range of magnetic susceptibilities (in SI) for rocks is illustrated in the figure below (Adapted from [CE91]). Recall that a relationship between the magnetic permeability and magnetic susceptibility is defined in the units section.

Fig. 29 Intrinsic magnetic susceptibilities for common rock types. Adapted from Clark and Emerson ([CE91]). Black and white bars are used to provide the range of magnetic susceptibility values for more distinct rock types. Vertical dashed red lines are used to represent the approximate magnetic susceptibility of rocks, based on % volume magnetite.