Replication Data and appendix for: Hysteresis of natural magnetite ensembles: Micromagnetics of silicate-hosted magnetite inclusions based on focused-ion beam nanotomography

Mapping Magnetic Signals of Individual Magnetite Grains to Their Internal Magnetic Configurations Using Micromagnetic Models

“…The pyroxene volume has been milled and imaged via focused‐ion‐beam nanotomography (FIB‐nt) from a norite sample obtained from drill cores of the Mount Harcus Intrusion (Nikolaisen et al., 2020 ). For this study, we analyzed the magnetite particle labeled OPX042 from the public data set of Nikolaisen ( 2020 ), which provides FE meshes of all the magnetite inclusions in the pyroxene volume. This grain has a volume of 0.0049 μm 3 which is equivalent to a sphere of 0.2107 μm diameter.…”

“… Micromagnetic modeling of a magnetite grain in a natural sample. Panels (a–c) show the mesh model of the OPX042 grain of (Nikolaisen, 2020 ) obtained from FIB‐nt. The topmost point of the mesh is indicated in (a).…”

“…Hence, the dipolar expansion produces a good estimation of inverted magnetic parameters, which can be seen from Figures 4c and 4d where the magnetizations given by the dipole expansion curve converges toward the higher order expansion curves. (Nikolaisen, 2020) obtained from FIB-nt. The topmost point of the mesh is indicated in (a).…”

Mapping magnetic signals of individual magnetite grains to their internal magnetic configurations using micromagnetic models

“…Micromagnetic modeling of a magnetite grain in a natural sample. Panels (a-c) show the mesh model of the OPX042 grain of(Nikolaisen, 2020) obtained from FIB-nt. The topmost point of the mesh is indicated in (a).…”