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Progress in Earth and Planetary Science

Table 1 Experimental conditions and results

From: Melting relations in the Fe–S–Si system at high pressure and temperature: implications for the planetary core

Run number

P a

T

Observed phases

[GPa]

[K]

Fe-8wt.%S-4wt.%Si

 FESSI09_004

58(4)

1450(50)

hcpb, fccb, Fe3S, NaCl(B2)

 FESSI09_007

59(4)

1490(50)

hcp, fcc, Fe3S, NaCl(B2)

 FESSI09_008

59(5)

1580(50)

hcp, fcc, Fe3S, NaCl(B2)

 FESSI09_009

61(4)

1700(50)

hcp, fcc, Fe3S, NaCl(B2)

 FESSI09_010

60(4)

1810(50)

hcp, fcc, Fe3S, NaCl(B2)

 FESSI09_011

60(4)

1830(50)

hcp, fcc, Fe3S, NaCl(B2)

 FESSI09_012

60(4)

1870(50)

fcc, NaCl(B2)d

 FESSI09_013

58.1(0.3)

300

hcp, fcc, Fe3S, NaCl(B2)

 FESSI10_015

55(2)

300

hcp, fcc, Fe3S, NaCl(B2)

 FESSI10_016

57(4)

1520(50)

hcp, fcc, Fe3S, NaCl(B2)

 FESSI10_017

57(5)

1560(50)

hcp, fcc, Fe3S, NaCl(B2)

 FESSI10_018

58(5)

1650(50)

hcp, fcc, Fe3S, NaCl(B2)

 FESSI10_019

58(5)

1675(50)

hcp, fcc, Fe3S, NaCl(B2)

 FESSI10_020

58(5)

1740(50)

hcp, fcc, Fe3S, NaCl(B2)

 FESSI10_022

57(5)

1780(50)

hcp, fcc, Fe3S, NaCl(B2)

 FESSI10_023

56(4)

1800(50)

hcp, fcc, Fe3S, NaCl(B2)

 FESSI10_024

54(4)

1810(50)

hcp, fcc, Fe3S, NaCl(B2)

 FESSI10_025

54(4)

1840(50)

hcp, NaCl(B2)e

 FESSI10_026

54(4)

1880(50)

hcp, NaCl(B2)e

 FESSI10_030

49.2(0.6)

300

hcp, fcc, Fe3S, NaCl(B2)

 FESSI27_012

20.9(0.3)

300

hcp, fcc, Fe3S, NaCl(B1)

 FESSI27_013

21(2)

1275(50)

hcp, fcc, Fe3S, NaCl(B1)

 FESSI27_014

21(2)

1310(50)

hcp, fcc, Fe3S, NaCl(B1)

 FESSI27_015

21(2)

1460(50)

hcp, fcc, Fe3S, NaCl(B1)

 FESSI27_020

21(2)

1520(50)

hcp, fcc, NaCl(B1)

 FESSI27_021

21.1(0.3)

300

hcp, fcc, Fe3S, NaCl(B1)

 FESSI27_028

21(2)

1760(50)

hcp, fcc, NaCl(B1)

 FESSI27_029

21(2)

1950(50)

NaCl(B1)

 FESSI27_030

20.8(0.3)

300

hcp, fcc, Fe3S, NaCl(B1)

 FESSI36_002

30.8(0.3)

300

hcp, fcc, Fe3S, NaCl(B2)

 FESSI36_003

33(4)

1430(50)

hcp, fcc, Fe3S, NaCl(B2)

 FESSI36_004

32(3)

1500(50)

hcp, fcc, Fe3S, NaCl(B2)

 FESSI36_005

33(4)

1550(50)c

hcp, fcc, Fe3S, NaCl(B2)

 FESSI36_006

33(4)

1660(50)c

hcp, fcc, Fe3S, NaCl(B2)

 FESSI36_007

35(4)

1790(50)

hcp, fcc, NaCl(B2)

 FESSI36_008

33(4)

1840(50)

hcp, fcc, NaCl(B2)

 FESSI36_009

32(5)

1910(50)c

fcc, NaCl(B2)

 FESSI36_010

34(5)

2010(50)c

NaCl(B2)

 FESSI36_011

34(4)

2030(80)

NaCl(B2)

 FESSI36_012

30.7(0.3)

300

hcp, fcc, Fe3S, NaCl(B2)

 FESSI36_026

51.1(0.8)

300

hcp, fcc, Fe3S, NaCl(B2)

 FESSI36_027

50(4)

1620(50)

hcp, fcc, Fe3S, NaCl(B2)

 FESSI36_028

50(4)

1865(50)c

hcp, fcc, Fe3S, NaCl(B2)

 FESSI36_029

49(5)

2150(50)c

hcp, fcc, NaCl(B2)

 FESSI36_030

51(5)

2270(60)

NaCl(B2)

 FESSI36_031

47.5(0.2)

300

hcp, fcc, Fe3S, NaCl(B2)

 FESSI36_032

55.0(0.5)

300

hcp, fcc, Fe3S, NaCl(B2)

Fe-12wt.%S-4wt.%Si

 FESSI19_005

24.9(0.1)

300

hcp, fcc, Fe3S,NaCl(B1,B2)

 FESSI19_006

26(3)

1350(50)

hcp, fcc, Fe3S,NaCl(B1,B2)

 FESSI19_007

27(3)

1410(50)

hcp, fcc, Fe3S,NaCl(B1,B2)

 FESSI19_008

26(3)

1390(50)

hcp, fcc, Fe3S,NaCl(B1,B2)

 FESSI19_009

27(3)

1470(50)

hcp, fcc, Fe3S,NaCl(B1,B2)

 FESSI19_013

27(3)

1460(50)

hcp, fcc, Fe3S,NaCl(B1,B2)

 FESSI19_014

27(3)

1610(75)

hcp, NaCl(B1,B2)e

 FESSI19_016

24.4(0.1)

300

hcp, fcc, Fe3S,NaCl(B1,B2)

 FESSI20_002

42.1(0.4)

300

hcp, Fe3S, NaCl(B2)

 FESSI20_003

44(3)

1345(50)

hcp, Fe3S, NaCl(B2)

 FESSI20_004

44(3)

1450(50)

hcp, Fe3S, NaCl(B2)

 FESSI20_005

44(3)

1480(50)

hcp, Fe3S, NaCl(B2)

 FESSI20_006

44(3)

1500(50)

hcp, Fe3S, NaCl(B2)

 FESSI20_007

44(3)

1570(50)

hcp, Fe3S, NaCl(B2)

 FESSI20_008

44(4)

1650(50)

hcp, Fe3S, NaCl(B2)

 FESSI20_013

44(4)

1730(50)

hcp, NaCl(B2)e

 FESSI20_015

42.2(3)

300

hcp, fcc, Fe3S, NaCl(B2)

  1. The numbers in parentheses show errors
  2. The melting of the sample was detected by disappearance of diffraction pattern
  3. aThe pressures are based on the EOS of NaCl(B1) (Brown, 1999) and NaCl(B2) (Fei et al., 2007)
  4. bhcp and fcc represent the structure of Fe−Si alloy
  5. cThe temperatures are estimated by the laser power
  6. dhcp-Fe−Si is expected to exist, although it is not observed
  7. efcc-Fe−Si is expected to exist, although it is not observed in the X-ray diffraction
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