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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