Sample Petrographic Description
Sample Number | MIL 05137 |
Newsletter | 29,2 |
Location | Miller Range |
Field Number | 18149 |
Dimensions (cm) | 1.5 x 1.5 x 0.75 |
Weight (g) | 2.42 |
Original Classification | CM1 Chondrite |
Weathering | |
Be | |
Fracturing | |
B | |
Macroscopic Description - Kathleen McBride | |
The exterior has black fusion crust on 25% of its surface. The interior has a lumpy black matrix with some evaporites and hard to distinguish chondrules. | |
Thin Section Description (,2) - Tim McCoy | |
The section consists of a few small chondrules (up to 0.5 mm) that have been completely replaced by phyllosilicate set in an Fe-rich serpentine matrix. No isolated mineral grains or CAIs are apparent; sulfide and carbonate grains are present. The section exhibits a strong fabric formed by the alignment of elongated remnant chondrules. Unaltered olivine or pyroxene grains of sufficient size for microprobe analyses were not found. This meteorite is a CM1 Chondrite. |
Antarctic Meteorite Images for Sample MIL 05137 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample MIL 05137 | ||||
Thin Section Photo(s) : | ||||
References for Sample MIL05137 | |
Krietsch, D., Busemann, H., Riebe, M.E.I., King, A.J., Alexander, C.M.O’D., Maden, C., 2021, Noble gases in CM carbonaceous chondrites: Effect of parent body aqueous and thermal alteration and cosmic ray exposure ages. Geochimica et Cosmochimica Acta, 310, 240–280, https://doi.org/10.1016/j.gca.2021.05.050. | |
Sridhar, S., Bryson, J. F, King, A. J., & Harrison, R. J., 2021, Constraints on the ice composition of carbonaceous chondrites from their magnetic mineralogy. Earth and Planetary Science Letters, 576, 117243. | |
Bates, H.C., King, A.J., Donaldson Hanna, K.L., Bowles, N.E., Russell, SS., 2020, Linking mineralogy and spectroscopy of highly aqueously altered CM and CI carbonaceous chondrites in preparation for primitive asteroid sample return. Meteoritics & Planetary Science, 55, 77–101, doi: 10.1111/maps.13411. | |
King, A. J., Schofield, P. F., & Russell, S. S. , 2017, Type 1 aqueous alteration in CM carbonaceous chondrites: Implications for the evolution of water?rich asteroids. . Meteoritics & Planetary Science, 52, 1197-1215, doi: 10.1111/maps.12872. |