Figure 5
From: High-Pressure Orthorhombic Ferromagnesite as a Potential Deep-Mantle Carbon Carrier
Experimentally observed phases in the (Mg,Fe)CO3 system at high P-T.
Open, half-filled and solid diamonds: phase I, I+II and II, respectively, for siderite [FeCO3] (this study); open and half-filled squares: phase I and I+II, respectively, for magnesite [MgCO3] (ref. 10); half-filled triangle: phase I and II for magnesite16; open and half-filled circles: phase I and I+II, respectively, for (Mg0.35Fe0.65)CO3 (this study); open triangles: phase I for magnesiosiderite [(Mg0.09Fe0.82Ca0.09)CO3] (ref. 39). Red, black and blue curves: phase transformation boundary between phase I and II for siderite, magnesiosiderite and magnesite, respectively. Gray solid curve: expected lower-mantle geotherm41.
