Sample Petrographic Description
Sample Number | QUE 99006 |
Newsletter | 23,2 |
Location | Queen Alexandra Range |
Field Number | 11619 |
Dimensions (cm) | 7.0 x 4.0 x 3.5 |
Weight (g) | 133.08 |
Original Classification | Eucrite (Brecciated) |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 61 | |
Weathering | |
B | |
Fracturing | |
B | |
Macroscopic Description - Kathleen McBride | |
Thin dark gray fusion crust covers 50% of this meteorite's exterior surface. Numerous vugs or plucked areas including a large one ~3 cm wide is on one surface. The interior matrix is gray and white crystalline matrix with some rusty stains. It is coarse grained, and has a soft friable texture. | |
Thin Section Description - Tim McCoy | |
The section consists of a granoblastic matrix of pyroxene and plagioclase with coarser basaltic clasts up to 2.5 mm. Mineral compositions are relatively homogeneous with orthopyroxene (Fs61Wo2), with fine lamellae of augite (Fs26Wo44), and plagioclase (An86-91Or0-1). The Fe/Mn ratio of the pyroxene is ~30. The meteorite is a brecciated eucrite. |
Antarctic Meteorite Images for Sample QUE 99006 | ||||
Lab Photo(s) : | ||||
References for Sample QUE99006 | |
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. | |
Beck, A. W., Lawrence, D. J., Peplowski, P. N., Prettyman, T. H., Mccoy, T. J., Mcsween, H. Y., Toplis, M. J., Yamashita, N., 2015, Using HED meteorites to interpret neutron and gamma-ray data from asteroidÿ4 Vesta. Meteoritics & Planetary Science, 50, 1311-1337, http://dx.doi.org/10.1111/maps.12467. | |
Warren, P. H., Kallemeyn, G. W., Huber, H., Ulff-Møller, F., Choe, W., 2009, Siderophile and other geochemical constraints on mixing relationships among HED-meteoritic breccias. Geochimica et Cosmochimica Acta, 73 Issue 19, 1-Oct-09, 5918-5943, ISSN 0016-7037, http://dx.doi.org/10.1016/j.gca.2009.06.030. |