Table 2.
Fe isotopic composition of reference material analysed in this study.
| (reference material)IRMM-014 | δ56Fe measured (‰) | δ56Fe reported (‰) | δ57Fe measured (‰) | δ57Fe reported (‰) |
|---|---|---|---|---|
| Aristar (n=30) | −0.29±0.03 | — | −0.42±0.03 | — |
| Certipur (n=34) | 1.26±0.02 | — | 1.88±0.04 | — |
| Johnson Mattey (n=15) | 0.41±0.02 | 0.421±0.05a | 0.62±0.03 | — |
| Puratonic (n=15) | 0.09±0.04 | 0.082±0.035a | 0.15±0.04 | — |
| Hematite (n=11) | 0.52±0.02 | 0.500±0.091b | 0.80±0.03 | 0.745±0.142b |
a
R. Schoenberg, University of Hanover 2005 (personal communication).