Sample Petrographic Description
Sample Number | MET 001060 |
Newsletter | 26,1 |
Location | Meteorite Hills |
Field Number | 12827 |
Dimensions (cm) | 2.0 x 2.0 x 1.5 |
Weight (g) | 9.84 |
Original Classification | Diogenite |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 19 | |
Weathering | |
C | |
Fracturing | |
C | |
Macroscopic Description - Kathleen McBride | |
The exterior of this meteorite is covered with a thick, brown-black fusion crust with polygonal fractures. It has a rough texture with small, shiny patches. The interior is composed of rusty or rust stained crystalline material. It has black accessory minerals and a few rounded, white inclusions. The matrix is mostly greenish in color with rust stained mineral grains with striations on the crystal faces. It is also heavily fractured. | |
Thin Section Description (,2) - Tim McCoy | |
The section is composed of large (up to 3 mm) orthopyroxene crystals. The meteorite is unbrecciated, with abundant 120° triple junctions, although very minor cataclasis may have occurred along grain boundaries. Orthopyroxene has a composition of Fs19Wo1 with an Fe/Mn ratio of ~26. The meteorite is an unbrecciated diogenite. |
Antarctic Meteorite Images for Sample MET 001060 | ||||
Lab Photo(s) : | ||||
References for Sample MET001060 | |
Mittlefehldt, D. W., 2015, Asteroid (4) Vesta: I. The howardite-eucrite-diogenite (HED) clan of meteorites. Chemie der Erde - Geochemistry, 75 Issue 2, Jun-15, 155-183, ISSN 0009-2819, http://dx.doi.org/10.1016/j.chemer.2014.08.002. | |
Mittlefehldt, D. W., Beck, A. W., Lee, C.-T. A., Mcsween, H. Y., Buchanan, P. C., 2012, Compositional constraints on the genesis of diogenites. Meteoritics & Planetary Science, 47, 72-98, http://dx.doi.org/10.1111/j.1945-5100.2011.01314.x. | |
Schiller, M., Baker, J., Creech, J., Paton, C., Millet, M., Irving, A., Bizzarro, M., 2011, Rapid Timescales for Magma Ocean Crystallization on the Howardite-Eucrite-Diogenite Parent Body. ApJ, 740, L22, http://dx.doi.org/10.1088/2041-8205/740/1/L22. |