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Table 2 Experimental conditions and phase assemblages in runs from Dalou et al. ( [2012] ) and this study

From: Contrasting partition behavior of F and Cl during hydrous mantle melting: implications for Cl/F signature in arc magmas

Run New names a Starting materials b P (GPa) T (°C) Duration (days) H 2 O c Run products (%) d ∑R (%) e Fe Exchange f
Olivine Opx Cpx Grt Amp Glass
CC4#7b CD1H0 β + π + cs 1.2 1,310 7 0.2   16(2) 16(19)    68(32) 0.82 −0.4
H3V04 CD2H3 Hβ + π + cs 1.2 1,240 6 2.6 34(2) 16(3) 13(2)    38(2) 0.15 +1.8
H4V4p CD2H4 Hβ + π + H2Og 1.2 1,180 5 4.3   6(2)    36(5) 58(4) 0.35 +0.3
H5V4p CD2H5 Hβ + π + H2O 1.2 1,190 5.5 4.9   11(2) 34(3)    55(2) 0.76 +1.5
H6V04 CD2H6 Hβ + π + H2Og 1.2 1,200 4 5.9   23(2)    11(5) 66(5) 0.17 +0.1
C4p#25kb CD1-2.5GPa β + π 2.5 1,430 5.5 0.8   4(1) 40(1) 28(2)   28(2) 0.64 +0.1
Grt3V4p CD2-2.5GPa Hβ + π 2.5 1,370 4.5 1.6   24(4) 9(9) 37(2)   30(1) 1.58 −1.5
  1. aNew names are used to identify samples from Dalou et al. ([2012]) (CD1) from samples from this study (CD2).
  2. b β basalt, hydrous basalt, π peridotite, cs cpx seeds, H 2 O drop of liquid H2O.
  3. cMeasured concentration of H2O dissolved in the glass.
  4. d Opx orthopyroxene, Cpx clinopyroxene, Amp amphibole, Glass quenched basaltic glass.
  5. eSquare root of an average of phase proportion calculations, modified from Albarède and Provost ([1977]), to account for the addition of F, H2O, and Cl in the starting materials (that diluted the initial element concentrations, see section ‘Equilibrium considerations’ for details). There is a significant uncertainty regarding volatile element initial contents.
  6. FeO was excluded from mass-balance calculations (FeO loss or gain is assessed after the phase proportions are determined).
  7. fDifference between the FeO content of the bulk composition used as starting material in the mass balance (diluted with F and H2O content) and the FeO in the sample bulk composition as determined by mass balance calculation, in relative weight percent. Positive value indicates apparent Fe gain, while negative value indicates apparent Fe loss.
  8. gCapsules F contaminated during HF cleaning.