Fig. 5

The analyzed diffractograms of \({\text {Res}}_{8\mu \text {m}}^{\text {Eq.3}}\)(H, Case) with (a) H = 0.0 kOe and Case = I-case, (b) H = 8.0 kOe and Case = I-case, (c) H = 0.0 kOe and Case = M-case, and (d) H = 8.0 kOe and Case = M-case. All intensities are normalized by the maximum intensity of the majority calcite phase, \(\text{I}_{\text{max}}\). Each Inset is an expansion of the region showing the expected Bragg peaks of the minority phases (vaterite \(\big (\)V,(100)\(\big )\), aragonite \(\big (\)A,(111)\(\big )\), and their overlap, \(\big (\)X: V(101), A(102)\(\big )\). The weak Bragg peak at \(26.5^\circ\) corresponds to an unidentified spurious phase.