Sample Petrographic Description
Sample Number | MET 01083 |
Newsletter | 25,2 |
Location | Meteorite Hills |
Field Number | 13958 |
Dimensions (cm) | 2.0 x 2.0 x 1.5 |
Weight (g) | 12.62 |
Original Classification | Ureilite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 8;Ferrosilite (mol%): 8 | |
Weathering | |
B | |
Fracturing | |
B | |
Macroscopic Description - Kathleen McBride | |
70% of the exterior surface is covered with black, shiny fusion crust. The interior has a crystalline matrix that is dark in color with some rusty haloes. Some slightly lighter inclusions are visible. | |
Thin Section Description (,2) - Tim McCoy, Gretchen Benedix, Linda Welzenbach | |
The section consists of an aggregate of olivine and pyroxene grains up to 1 mm across rimmed by carbon-rich material containing traces of metal. The olivines exhibit undulatory extinction. The olivine cores and rims are equilibrated (Fa8). Pyroxenes are pigeonite (Fs8Wo5) and subcalcic augite grains (Fs5Wo37). The meteorite is a ureilite. |
Antarctic Meteorite Images for Sample MET 01083 | ||||
Lab Photo(s) : | ||||
References for Sample MET01083 | |
Beard, S. P., & Swindle, T. D. , 2017, Search for evidence of source event grouping among ureilites. . Meteoritics & Planetary Science, 52, 2343-2352, doi:10.1111/maps.12939. | |
Warren, P. H., 2012, Parent body depth-pressure-temperature relationships and the style of the ureilite anatexis. Meteoritics & Planetary Science, 47, 209-227, http://dx.doi.org/10.1111/j.1945-5100.2011.01320.x. | |
Warren, P. H., Ulff-Møller, F., Huber, H., Kallemeyn, G. W., 2006, Siderophile geochemistry of ureilites: A record of early stages of planetesimal core formation. Geochimica et Cosmochimica Acta, 70 Issue 8, 15-Apr-06, 2104-2126, ISSN 0016-7037, http://dx.doi.org/10.1016/j.gca.2005.12.026. |