Sample Petrographic Description
Sample Number | MIL 07277 |
Newsletter | 33,1 |
Location | Miller Range |
Field Number | 17371 |
Dimensions (cm) | 3.0 x 3.0 x 2.0 |
Weight (g) | 34.10 |
Original Classification | CV3 Chondrite |
Updated Classification | CV 3.6 Chondrite Reduced |
Pairing | MIL 07277; MIL 090646; MIL 090677; MIL 15123; MIL 15148; MIL 15192; MIL 15227; MIL 15229; MIL 15240; MIL 15247; MIL 15254; MIL 15255; MIL 15257; MIL 15264; MIL 15265; MIL 15268; MIL 15363; MIL 15472; MIL 15480; MIL 15511; MIL 15516; MIL 15524; MIL 15555; MIL 15565; |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 0-13;Ferrosilite (mol%): 1-9 | |
Weathering | |
B | |
Fracturing | |
A/B | |
Macroscopic Description - Cecilia Satterwhite | |
The exterior has brown/black fusion crust with oxidation and rusty patches. The interior is dark gray to black matrix with some oxidation. Abundant inclusions and chondrules are visible. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy, Glenn MacPherson | |
This section exhibits large chondrules (up to 3 mm), metal, silicate particles and CAIs in a dark matrix. It is heavily weathered and shock flattened. Olivines range from Fa0-13 and low-Ca pyroxene is Fs1-9. The meteorite is an unequilibrated carbonaceous chondrite, probably a reduced CV3. | |
Reclassification Notes (AMN 46,1) | |
Reclassification and pairing based on Raman spectroscopy (petrologic type 3.6), and on Ni content of metal and sulfide and magnetic susceptibility (Reduced). Details are reported in Righter et al. (2022); doi: 10.1111/maps.13932. |
Antarctic Meteorite Images for Sample MIL 07277 | ||||
Thin Section Photo(s) : | ||||
References for Sample MIL07277 | |
Eschrig, J., Bonal, L., Beck, P., Prestgard, T.J., 2021, Spectral reflectance analysis of type 3 carbonaceous chondrites and search for their asteroidal parent bodies. Icarus, 354, 114034, https://doi.org/10.1016/j.icarus.2020.114034. | |
Bonal, L., Gattacceca, J., Garenne, A., Eschrig, J., Rochette, P., and Ruggiu, L.K., 2020, Water and heat: New constraints on the evolution of the CV chondrite parent body. Geochimica et Cosmochimica Acta, 276, 363–383. | |
Gattacceca, J., Bonal, L., Sonzogni, C., and Longerey, J., 2020, CV Chondrites: More than one parent body. Earth and Planetary Science Letters, 547, 116467, doi: 10.1016/j.epsi2020.116467. | |
Bonal, L., Quirico, E., Flandinet, L., Montagnac, G., 2016, Thermal history of type 3 chondrites from the Antarctic meteorite collection determined by Raman spectroscopy of their polyaromatic carbonaceous matter. Geochimica et Cosmochimica Acta, 189, 312-337. |