Figure 1
From: Behavior of light elements in iron-silicate-water-sulfur system during early Earth’s evolution
(a) Phase diagrams of iron and FeHx. Phase boundaries of FeHx and Fe are from previous studies (Antonov et al.30; Fukai et al.31; Klotz et al.32). (b) An enlarged region of the gray area in (a) with PT paths of the neutron diffraction experiments. All data are hydrous samples with/without sulfur denoted as stars and diamonds, respectively. Larger symbols show the long-duration measurements. The occurrence of phase transitions of Fe is shown as triangles (filled triangle for transition to fcc from bcc or hcp; filled inverted triangle for bcc-hcp transition). The dehydration of Mg(OD)2 is denoted as “+” symbols.
