Sample Petrographic Description
Sample Number | QUE 99387 |
Newsletter | 25,1 |
Location | Queen Alexandra Range |
Field Number | 11640 |
Dimensions (cm) | 2.9 x 2.1 x 1.0 |
Weight (g) | 10.60 |
Original Classification | Enstatite Meteorite Ungr |
Pairing | QUE 94204; QUE 97289; QUE 97348; QUE 99059; QUE 99122; QUE 99157; QUE 99158; QUE 99387; |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 0-1 | |
Weathering | |
B/C | |
Fracturing | |
A | |
Macroscopic Description - Cecilia Satterwhite | |
50% of the exterior of this meteorite is covered with pitted brown weathered fusion crust. The interior reveals rusty crystalline material that has a crumbly texture. Some rusty dark chondrules are visible. | |
Thin Section Description (,2) - Tim McCoy, Linda Welzenbach, Gretchen Benedix | |
This meteorite is paired with a number of earlier-described QUE samples, including 94204/97348/97289/99059/99122/99157/99158. The section consists of mm-sized enstatite grains (Fs0-1), SiO2, zoned plagioclase (An28-34), metal, troilite, daubreelite, alabandite and schreibersite. The latter phases often occur as rounded enclaves in the enstatite. These meteorites are unusual aubrites or enstatite chondrite impact melt rocks. |
Antarctic Meteorite Images for Sample QUE 99387 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample QUE 99387 | ||||
Thin Section Photo(s) : | ||||
References for Sample QUE99387 | |
Van Niekerk, D., Keil, K., Humayun, M., 2014, Petrogenesis of anomalous Queen Alexandra Range enstatite meteorites and their relation to enstatite chondrites, primitive enstatite achondrites, and aubrites. Meteoritics & Planetary Science, 49, 295-312. | |
Rochette, P., Kohout, T., Pesonen, L., Quirico, E., Sagnotti, L., Skripnik, A., Gattacceca, J., Bonal, L., Bourot-Denise, M., Chevrier, V., Clerc, J. P., Consolmagno, G., Folco, L., Gounelle, M., 2008, Magnetic classification of stony meteorites: 2. Non-ordinary chondrites. Meteoritics & Planetary Science, 43, 959-980, http://dx.doi.org/10.1111/j.1945-5100.2008.tb01092.x. |