Sample Petrographic Description
Sample Number | DOM 14021 |
Newsletter | 40,2 |
Location | Dominion Range |
Field Number | 22548 |
Dimensions (cm) | 9.8 x 5.5 x 4.0 |
Weight (g) | 386.41 |
Original Classification | EH3 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 1;Ferrosilite (mol%): 0-16 | |
Weathering | |
A | |
Fracturing | |
A/B | |
Macroscopic Description - Rachel Funk | |
99% black/brown slightly fractured fusion crust. The interior is a black matrix with black and white inclusions/chondrules and metal throughout. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy | |
The section shows an aggregate of chondrules (up to 1 mm), chondrule fragments, and pyroxene grains in a matrix of about 30% metal and sulfide. Chondrules contain relatively abundant olivine. Weathering is modest, with staining of some enstatite grains and minor alteration of metal and sulfides. Microprobe analyses show the olivine is Fa1 and pyroxene is Fs0-16. The nickel-iron contains 2.5% Si. The meteorite is a type 3 enstatite chondrite, probably an EH3. |
Antarctic Meteorite Images for Sample DOM 14021 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample DOM 14021 | ||||
Thin Section Photo(s) : | ||||
References for Sample DOM14021 | |
Dunham, E. T., Sheikh, A., Opara, D., Matsuda, N., Liu, M. C., & McKeegan, K. D., 2023, Calcium–aluminum-rich inclusions in non-carbonaceous chondrites: Abundances, sizes, and mineralogy, Meteoritics & Planetary Science, 58, 643-671, doi: 10.1111/maps.13975. | |
Hellmann, J.L., Hopp, T., Burkhardt, C., Becker, H., Fischer-Godde, M., and Kleine, T., 2021, Tellurium isotope cosmochemistry: Implications for volatile fractionation in chondrite parent bodies and origin of the late veneer. Geochimica et Cosmochimica Acta, 309, 313–328, https://doi.org/10.1016/j.gca.2021.06.038. | |
Simkus, D.N., Aponte, J.C., Elsila, J.E., McLain, H.L., Parker, E.T., Dworkin, J.P., and Glavin, D.P., 2021, Low total abundances and a predominance of n-ω-amino acids in enstatite chondrites: Implications for thermal stability of amino acids in the inner solar system. Meteoritics & Planetary Science, 56, 2118-2127, doi: 10.1111/maps.13757. |