Sample Petrographic Description
Sample Number | DOM 10121 |
Newsletter | 34,2 |
Location | Dominion Range |
Field Number | 21359 |
Dimensions (cm) | 3.1 x 2.7 x 1.2 |
Weight (g) | 16.15 |
Original Classification | CO3 Chondrite |
Updated Classification | CM2 Chondrite |
Pairing | DOM 10121; DOM 10299; |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 1-39 | |
Weathering | |
Ae | |
Fracturing | |
A/B | |
Macroscopic Description - Cecilia Satterwhite | |
The exterior has some black frothy fractured fusion crust. Areas without fusion crust are black. The interior is a black matrix with abundant mm sized white clasts, minor oxidation and evaporites. | |
Thin Section Description (,2) - Cari Corrigan, Linda Welzenbach, Nicole Lunning | |
This section consists of abundant small (up to 1 mm) chondrules, chondrule fragments and mineral grains in a dark matrix, which exhibits a distinct horizontal fabric. Metal and sulfide occur within and rimming the chondrules. Glass within chondrules appears to be very clear/fresh. CAIs are abundant (mostly Type A), and range in size up to 1 mm. AOAs up to 1 mm are present, as well. Olivine ranges in composition from Fa1-39. This is a CO3 chondrite (likely type 3.0-3.2). | |
Reclassification Notes (AMN 44,2) | |
Reclassified to a CM2 chondrite based on cosmic ray exposure age, C, N, and H contents. Righter K., Alexander, C., Foustoukos, D., Mertens, C.A.K., Busemann, H., Schutt, J. (2021) Pairing Relations Within CO3 Chondrites Recovered at the Dominion Range and Miller Range, Transantarctic Mountains, 84th Annual Meteoritical Society meeting, Chicago, abstract #6191. |
Antarctic Meteorite Images for Sample DOM 10121 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample DOM 10121 | ||||
Thin Section Photo(s) : | ||||
References for Sample DOM10121 | |
Hiroi, T., Ohtsuka, K., Howard, K.T., Robertson, K.R., and Milliken, R.E., Kaiden, H., Imae, N., Misawa, K., Kojima, H., Sasakia, S., Matsuokaa, M., Nakamura, T., Bish, D.L., 2021, UV-visible-infrared spectral survey of Antarctic carbonaceous chondrite chips. Polar Science, 29, 100723, https://doi.org/10.1016/j.polar.2021.100723. | |
Sears, D. W., 2016, The CO chondrites: Major Recent Antarctic finds, Their Thermal and Radiation History, and Describing the Metamorphic History of Members of the Class. Geochimica et Cosmochimica Acta, 188, 106–124. | |
RELAB, , Reflectance Experiment Lab , catalogue of samples. |