Sample Petrographic Description
Sample Number | MIL 07513 |
Newsletter | 33,2 |
Location | Miller Range |
Field Number | 18717 |
Dimensions (cm) | 2.7 x 2.5 x 1.0 |
Weight (g) | 10.46 |
Original Classification | CR2 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 1;Ferrosilite (mol%): 0-1 | |
Weathering | |
B | |
Fracturing | |
A | |
Macroscopic Description - Cecilia Satterwhite | |
The exterior has black fusion crust, frothy on one surface and rusty areas on other. The interior is a dark gray to black matrix with some rusty areas. Abundant inclusions of various sizes and colors. | |
Thin Section Description (,2) - Cari Corrigan, Linda Welzenbach | |
The section exhibits large (up to 1 mm), well-defined, metal-rich chondrules and CAIs in a dark matrix of FeO-rich phyllosilicate. Silicates are unequilibrated with olivines Fa0-2, and Fs0-1Wo1. The meteorite is probably a CR2 chondrite. |
Antarctic Meteorite Images for Sample MIL 07513 | ||||
Lab Photo(s) : | ||||
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Antarctic Meteorite Images for Sample MIL 07513 | ||||
Thin Section Photo(s) : | ||||
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References for Sample MIL07513 | |
Zhu, K., Schiller, M., Moynier, F., Groen, M., Alexander, C.M.D., Davidson, J., Schrader, D.L., Bischoff, A., and Bizzarro, M., 2023, Chondrite diversity revealed by chromium, calcium and magnesium isotopes. Geochimica et Cosmochimica Acta, 342, 156–168, https://doi.org/10.1016/j.gca.2022.12.014. | |
Zhu, K., and Becker, H., Moynier, F., Alexander, C.M.O'D., Davidson, J., Schrader, D.L., Zhu, J-M., Wu, G-L., Schiller, M., Bizzarro, M., 2021, Chromium stable isotope panorama of chondrites and implications for early Earth accretion, The Astrophysical Journal, 923:94, doi: 10.3847/1538-4357/ac2570. | |
Weisberg, M.K., and Righter, K., 2015, Primitive Asteroids: Expanding the Range of Known Primitive Materials. In Righter, K., Corrigan, C.M., McCoy, T.J., and Harvey, R.P. Meteorites: A Pictorial Guide to the Collection, First Edition, AGU Wiley, pp. 65-77. | |
Harju, E. R., Rubin, A. E., Ahn, I., Choi, B.-G., Ziegler, K., Wasson, J. T., 2014, Progressive aqueous alteration of CR carbonaceous chondrites. Geochimica et Cosmochimica Acta, 139, 15-Aug-14, 267-292, ISSN 0016-7037, http://dx.doi.org/10.1016/j.gca.2014.04.048. |