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Progress in Earth and Planetary Science

Table 1 Experimental conditions and average water contents of recovered stishovite

From: Hydrogen partitioning between stishovite and hydrous phase δ: implications for water cycle and distribution in the lower mantle

Run #

P

T

D

Starting sample

Phase

CH2O

Al2O3 content*

GPa

°C

h

ppm

wt%

H5276

22

1900

3

SiO2:Al(OH)3 = 99:1

sSt

994(44)

0.64(3)

H5324

24

1000

24

sSt/SiO2:AlOOH = 8:2

St/St + δ

456(32)

0.63(4)

H5365

24

1200

24

sSt/SiO2:AlOOH = 8:2

St/St + δ

491(41)

0.64(2)

I1130

28

1200

24

sSt/SiO2:AlOOH = 8:2

St/St + δ

534(25)

0.62(2)

  1. sSt, Starting stishovite single crystal; St, stishovite; δ, hydrous phase δ
  2. *Average compositions from several grains (see details in Table 2 and Additional file 1: Table S1)
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