Chemical Composition: | Olivine (Fa35.0-35.3, FeO/MnO = 83-94, N = 4), orthopyroxene (Fs27.8-28.0Wo3.5-4.0, FeO/MnO = 51-56, N = 4), plagioclase (An48.2-48.9Or1.1, N = 2), kamacite (Ni = 7.2 wt.%), taenite (Ni = 16.4 wt.%). Oxygen isotopes (K. Ziegler, UNM): analysis of acid-washed subsamples by laser fluorination gave, respectively: δ17O 0.661, 0.470, 0.296, 0.359, 0.375, 0.303; δ18O 4.314, 4.021, 3.637, 3.840, 3.939, 3.761; Δ17O -1.617, -1.653, -1.625, -1.668, -1.705, -1.683 per mil. Chromium isotopes (M. Sanborn and Q. Yin, UCD): 54Cr is the same within analytical uncertainty as that for CR2 chondrite Renazzo reported by Sanborn et al. (2019). |
---|