Sound velocities of bridgmanite from density of states determined by nuclear inelastic scattering and first-principles calculations

Progress in Earth and Planetary Science

Table 1 Starting materials used for DAC experiments

Sample	Phase	x _Fe	x _Al	x _Mg	x _Si	Fe³⁺/ΣFe precursor	Fe³⁺/ΣFe bridgmanite	⁵⁷Fe enrichment	Ref
U1219	Majorite	0.18(1)	0	0.82(1)	1.00(1)	0.09(2)	0.15–0.20	0.9	a, b
SL16	Bridgmanite	0.14(2)	0.02(1)	0.86(3)	0.98(4)	–	0.30(5)	0.6	c
SL18	Pyroxene	0.12(1)	0	0.88(2)	1.00(1)	n.a.	0.15(4)	0.6	d, e
S4850	Bridgmanite	0.40(3)	0.37(2)	0.60(3)	0.63(3)	–	0.80(5)	0.9	f
S4883	Bridgmanite	0.15(2)	0.04(1)	0.83(2)	0.98(1)	–	0.27(7)	0.6	g

a McCammon and Ross (2003); b McCammon et al. (2010); c Lauterbach et al. (2000); d Lauterbach (2000); e McCammon et al. (2008); f Potapkin et al. (2013); g this study
n.a. not analyzed