Table 2. Hydrogen concentrations in coexisting silicate and metal phases.
We also report the metal-silicate partition coefficient of hydrogen (). Numbers in parentheses are the associated 1σ uncertainties. All values are obtained by ERDA, except for sample W12.
| Sample | H in silicate (ppm) | H in metal (ppm) | DH |
| V1 | 402 (100) | 19.5 (7.9) | 0.048 (32) |
| W16 | 452 (113) | 75 (17) | 0.166 (81) |
| W8 | 665 (166) | 120 (30) | 0.181 (91) |
| W12 | 353* (88) | 59 (12) | 0.167 (77) |
| W19 | 1234 (309) | 63.4 (5.5) | 0.051 (17) |
| W34 | 752 (188) | 254 (53) | 0.34 (15) |
| SiW1 | 465 (116) | 18.9 (7.8) | 0.041 (27) |
| SiW8 | 678 (170) | 524 (89) | 0.77 (32) |
| SW3 | 541 (135) | 23.6 (1.9) | 0.044 (14) |
*Value in the silicate phase determined using the Al-proxy calculation [see the Supplementary Materials and the study of Clesi (16)] because of a lack of ERDA measurements.