Sample Petrographic Description
Sample Number | DOM 08351 |
Newsletter | 34,1 |
Location | Dominion Range |
Field Number | 18241 |
Dimensions (cm) | 5.5 x 1.5 x 1.25 |
Weight (g) | 26.30 |
Original Classification | CO3 Chondrite |
Updated Classification | CO3.05 Chondrite |
Pairing | DOM 08004; DOM 03238; DOM 08139; DOM 08351; DOM 10101; DOM 10104; DOM 14019; DOM 14127; DOM 14305; DOM 18019; DOM 18069; DOM 19049; DOM 19068; DOM 19099; DOM 19170; DOM 19179; |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 0-44;Ferrosilite (mol%): 1-3 | |
Weathering | |
B | |
Fracturing | |
A/B | |
Macroscopic Description - Kathleen McBride | |
The exterior is covered with 100% brown/black fusion crust with polygonal fractures. The interior is a black fine grained matrix with light colored inclusions. The meteorite is moderately hard. | |
Thin Section Description (,2) - Cari Corrigan, Linda Welzenbach | |
The section consists of abundant (up to 1 mm) chondrules, chondrule fragments and mineral grains in a dark matrix. Metal and sulfide occur within and rimming the chondrules. Olivine ranges in composition from Fa0-44 and pyroxenes range from Fs1-3. This meteorite is a CO3 chondrite and is possibly paired with DOM 08004 pairing group. | |
Reclassification Notes (AMN 47,1) | |
Based on Type II (FeO-rich) chondrule olivine Cr content, this sample has been reclassified to CO3.05 chondrite. Details are reported in Righter, K. et al. (2024) Pairing relations within CO3 chondrites recovered at the Dominion Range and Miller Range, Transantarctic mountains: Constraints from chondrule olivines, noble gas, and H, C, N bulk and isotopic compositions. Meteoritics and Planetary Science 59; https://doi.org/10.1111/maps.14146. | |
Notes | |
Pairing group updated for AMN 44 no. 2 based on information in : Righter K., Alexander, C., Foustoukos, D., Mertens, C.A.K., Busemann, H., Schutt, J. (2021b) Pairing Relations Within CO3 Chondrites Recovered at the Dominion Range and Miller Range, Transantarctic Mountains, 84th Annual Meteoritical Society meeting, Chicago, abstract #6191. Comparison of DOM 03238 to many of these samples reveals that it has the same CRE age, Type II chondrule olivine Cr2O3 contents, and H, C, and N elemental and isotopic compositions. Initially thought to have a high magnetite component, its mode is only slightly higher than that measured in a number of DOM 08004 pairing group CO3s (Rubin and Li, 2019). Given all this new information, we reclassify DOM 03238 as a CO3, and add it to the DOM 08004 pairing group. Data supporting this new pairing update for DOM CO3 chondrites were presented in Righter et al. (2021, 2022, 2023) and Rubin and Li (2019). |
Antarctic Meteorite Images for Sample DOM 08351 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample DOM 08351 | ||||
Thin Section Photo(s) : | ||||
Antarctic Meteorite Scans for Sample DOM 08351 | ||||
XCT Scan(s) : | ||||
XCT Scan of Sample DOM 08351 |
References for Sample DOM08351 | |
Li, Y., Rubin, A.E., and Weibiao, H., 2021, Formation of metallic-Cu-bearing mineral assemblages in type-3 ordinary and CO chondrites, American Mineralogist, 106, 1751–1767, https://doi.org/10.2138/am-2021-7689. | |
Ma, C., Krot, A. N., Beckett, J. R., Nagashima, K., Tschauner, O., Rossman, G. R., Simon, S. B., Bischoff, A., 2020, Warkite, Ca2Sc6Al6O20, a new mineral in carbonaceous chondrites and a key-stone phase in ultrarefractory inclusions from the solar nebula. Geochimica et Cosmochimica Acta, 277, 52-86, doi: 10.1016/j.gca.2020.03.002. | |
Rubin, A.E. , and Li, Y., 2019, Formation and destruction of magnetite in CO3 chondrites and other chondrite groups. Geochemistry, 79, 125528, https://doi.org/10.1016/j.chemer.2019.07.009. |