Figure 1
From: Low-spin ferric iron in primordial bridgmanite crystallized from a deep magma ocean
The spin state of Fe in (Fe,Al)-bearing bridgmanite compiled in a two-dimensional diagram with the x-axis the sample synthesis pressure and the y-axis the sample grain size. 1st and 2nd quadrants, studies used a multigrain sample, 3rd and 4th quadrants, studies used a single-crystal sample. 1st and 4th quadrants, sample synthesized in a DAC, 2nd and 3rd quadrants, used a sample pre-synthesized in a MA. Numbers in the table denote the quadrants. *: discussed in Fujino et al.20. #: lack clear evidence from their synchrotron Mössbauer spectroscopy (SMS) results but has suggested being present from their Electron Energy-Loss Spectroscopy (EELS) results. *: hiroseite with almandine composition. P present; N no evidence. T- and E-SMS, time- and energy-domain SMS, respectively.
