Concentrations and isotope ratios measured in the various mineral fractions. Hf and W concentrations are provided with an average uncertainty of 3 to 5%. 180Hf/184W ratios were calculated using the Hf/W elemental ratios (180Hf/184W = Hf/W × 1.14). Epsilon values were calculated using 186W/184W = 0.927672 as the normalization ratio. Data are corrected for cosmogenic effects (Leya et al., 2000) and for procedural blanks. Note that ZSTK474 most fractions present Re/W and Ta/W weight ratios small enough so that the correction for cosmogenic effects have no influence on the data within uncertainty (see text). Hence, only data presenting a Ta/W ratio higher than 0.22 have been corrected. Similarly, the small exposure age of the meteorite (76 Ma) implies negligible variations on the W isotope ratios within uncertainty, except those involving 182W. Hence, only ε182Wε182W/183W and ε182Wε182W/184W values have been corrected. Uncorrected data and data corrected from blanks are presented in Appendix A1. The errors reported here are propagated from the analytical errors. Nucleosynthetic anomalies clearly characterize the silicates as ε182W/184Wε182W/184W values are arterioles distinct from ε182Wε182W/183W, and as ε184Wε184W/183W are non-zero.FractionHf (ppb)W (ppb)Re/W2SDTa/W2SD180Hf/184W2SDε182W/184Wε182W/184W2SDε183W/184Wε183W/184W2SDε182W/183Wε182W/183W2SDnMC-ICPMSMetal (Nu 500 HR)08070.250.050.00010.001200.001−3.100.250.020.2−3.020.33Metal (Neptune Plus)08070.260.050.00010.001200.001−3.360.15−0.060.17−3.080.154Bulk 182.22490.20.120.020.0010.390.03−3.320.18−0.170.43−1.770.253Bulk 21023500.190.080.040.0020.340.01−3.440.18−0.210.06−1.760.263N-TIMSMetal08070.250.050.00010.001200.001−3.180.32−0.020.27−3.020.371Bulk96.73120.190.110.030.0010.360.02−3.640.55−0.280.62−1.870.622Pure-silicates >150 μm1273.9200.0011.30.2238.081.42−12.03.8−22.52.1−6.374.21Silicate + opaque37114.200.0011.340.1730.81.06−10.52.1−18.22.7−5.683.62<150 μm68947.200.0011.480.117.181.42−7.072.21−10.02.1−3.612.62Opaque48686.700.0010.30.016.610.18−2.141.41−3.920.63−1.130.532Full-size tableTable optionsView in workspaceDownload as CSV
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