Table 1 The bond lengths of C-O, Ca-O, and Ca-Ca in aragonite, amorphous, and liquid CaCO3

From: Temperature-induced amorphization in CaCO3 at high pressure and implications for recycled CaCO3 in subduction zones

 

P (GPa)

T (K)

C-O (Å)

Ca-O (Å)

Ca-Ca(Å)b

Liquid

5.5

1923

1.193(3)

2.444(3)

4.114(2)

5.1

1873

1.210(2)

2.439(2)

4.040(1)

Amorphous

5.2

1773

1.319(1)

2.406(2)

4.232(2)

4.4

1573

1.304(1)

2.381(1)

4.177(1)

Aragonitea

5.2

1773

1.288(1)

2.437(1)

3.922(1)

4.4

1573

1.287(1)

2.435(1)

3.976(1)

  1. aThe bond lengths of aragonite-CaCO3 were calculated according to Litasov et al.25 and Negro and Ungaretti33
  2. bThe Ca-Ca bond lengths for amorphous phase and liquid phase are difficult to be calculated because of the asymmetry of the peak. The values are the positions of the topmost of the Ca-Ca peaks
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