Table 2 Elastic parameters of MORB-derived silicate minerals and end members.

From: Cubic Fe-bearing majorite synthesized at 18–25 GPa and 1000 °C: implications for element transport, subducted slab rheology and diamond formation

Mineral

KS0 (GPa)

KS’

dKS/dT (GPa K−1)

G0 (GPa)

G’

dG/dT (GPa K−1)

CaMgSi2O6 diopside a

116.4

4.9

− 0.012

73

1.6

− 0.011

Pyrope b

170

4.5

− 0.017

93.2

1.51

− 0.011

Grossular c

171

4.4

− 0.013

108

1.3

− 0.011

Andradite d

154

4.7

− 0.013*

90

1.2

− 0.011*

Almandine e

174

4.6

− 0.027

95

1.1

− 0.013

MgSiO3 Maj f

164

4.1

− 0.022

86

1.1

− 0.009

Na-Maj g

173

4.4*

− 0.013**

115

1.5

− 0.010**

MORB Maj h

155.8

4.5

− 0.013**

89.7

1.5

− 0.010**

Pyrolite Maj i

164.4

4.2

− 0.013

94.9

1.1

− 0.010

SiO2 + 2wt% Al2O3 Stishovite j

286

5.2

− 0.045

199

2.5

− 0.017

  1. a. Ref. 90, b. Ref. 60, c. Ref. 91, d. Ref. 62, e. Ref. 63, f. derived from Ref. 61, g. Ref. 42,64, h. Ref. 58, i. Ref. 59, j. Ref. 92. Value fixed to those of *grossular Grt and ** pyrolitic Maj, respectively. (+) KS and G were taken from ref. 64, which has the closest composition to our cubic majorite. Ks’ was derived from Kt’ of 42 and G’ from assuming a constant Poisson ratio. Thermal parameters were assumed = pyrolitic Maj.
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