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Table 4 Chemical compositions of experimental and residual mineral phases in pyrolite + 8 wt.% H 2 O

From: Hydrous origin of the continental cratonic mantle

Run no. SiO2(wt.%) TiO2 Al2O3 Cr2O3 FeO* MgO CaO Na2O K2O Total Mg#
3.0 GPa             
  OD1085 Ol 40.3 0.0 0.0 0.1 7.8 50.0 0.1 0.7 0.0 99.1 0.920
MgPx 56.1 0.0 1.4 0.9 4.9 35.1 0.3 0.8 0.0 99.6 0.927
4.5 GPa             
  OD1022 Ol 40.9 0.0 0.0 0.1 8.4 50.0 0.0 0.2 0.0 99.6 0.914
MgPx 56.9 0.1 0.8 0.3 4.9 35.4 0.4 0.3 0.0 99.0 0.928
Gt 41.2 0.5 20.4 2.2 7.9 21.9 3.8 0.1 0.0 98.6 0.832
  OD1053 Ol 41.2 0.0 0.0 0.1 5.8 50.9 0.0 0.0 0.0 98.1 0.940
MgPx 55.6 0.1 1.4 0.8 4.1 35.4 0.3 0.0 0.0 97.5 0.939
  OD1050 Ol 41.7 0.14 0.0 0.2 5.1 51.6 0.0 0.1 0.0 98.8 0.948
MgPx 58.3 0.0 0.5 0.4 3.2 36.1 0.2 0.1 0.0 99.0 0.952
  OD1045 Ol 41.8 0.0 0.0 0.1 4.9 52.2 0.1 0.1 0.0 99.3 0.950
6 GPa             
  OD1080 Ol 41.54 0.0 0.0 0.0 6.0 52.2 0.0 0.7 0.0 100.5 0.939
MgPx 57.7 0.0 0.7 0.0 4.2 36.5 0.4 0.8 0.0 100.5 0.940
Gt 41.6 0.5 17.9 1.3 10.4 21.4 4.9 0.7 0.0 98.6 0.786
FeTi 2.3 12.9 1.6 2.5 61.4 3.5 0.5 0.3 0.0 85.0  
  OD1065 MgPx 56.7 0.1 1.0 0.2 3.2 36.8 0.4 0.9 0.0 99.2 0.954
Gt 43.5 0.2 19.2 2.4 5.8 26.3 2.0 0.7 0.0 100.0 0.891
  OD1079 MgPx 57.8 0.1 0.7 0.3 3.0 36.9 0.2 0.8 0.0 99.9 0.956
8 GPa             
  OD1086 MgPx 58.6 0.1 0.5 0.3 3.0 37.1 0.3 0.8 0.0 100.6 0.957
Gt 45.0 0.2 17.9 2.4 4.9 27.4 1.1 0.6 0.0 99.4 0.910
  1. Ol, olivine; MgPx, Mg-rich orthopyroxene; Gt, garnet; FeTi, Fe- and Ti-bearing hydroxide. FeO*, total iron is listed as FeO.