Figure 6
Diagrams showing fits to G(r) for nano-crystalline FeS (mackinawite) at room P and T (top left) and the fit to G(r) obtained from data collected at 9.1 GPa (Fig. 7) using the model for troilite (top right), the stable phase at ambient P for bulk FeS shown in Fig. 5(a), and using the model for the MnP-related form (bottom left) and FeS-III (bottom right), the stable phase above about 4.6 GPa and 7.2 GPa, respectively (Nelmes et al., 1999; Marshall et al., 2000). The experimentally determined G(r) in each case is shown as a blue dotted line and the model as a red continuous line. The difference curve (black line) is plotted below and on the same scale as the experimental and model-derived curves. |