Sample Petrographic Description
Sample Number | MET 00783 |
Newsletter | 26,1 |
Location | Meteorite Hills |
Field Number | 13522 |
Dimensions (cm) | 3.5 x 2.0 x 2.0 |
Weight (g) | 26.25 |
Original Classification | EH4 Chondrite |
Pairing | MET 00636; MET 00783; |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 0-1 | |
Weathering | |
C | |
Fracturing | |
B | |
Macroscopic Description - Kathleen McBride | |
The exteriors of these meteorites are rust colored. The interiors have a non-descript, brittle, rust colored matrix. | |
Thin Section Description (,2) - Tim McCoy | |
These two meteorites are tentatively paired. Found 4.5 km apart, they exhibit similar features, although these same features are shared by many EH4 chondrites. The sections show an aggregate of chondrules (up to 1 mm), chondrule fragments, and pyroxene grains in a matrix of about 30% metal and sulfide. Weathering is significant, with staining of some enstatite grains and minor alteration of metal and sulfides. Orthopyroxene is Fs0-1 and metal contains ~3 wt.% Si. The meteorites are EH4 chondrites. |
Antarctic Meteorite Images for Sample MET 00783 | ||||
Lab Photo(s) : | ||||
References for Sample MET00783 | |
Izawa, R. M., Flemming, R. L., Banerjee, N. R., Mccausland, J. A., 2011, Micro-X-ray diffraction assessment of shock stage in enstatite chondrites. Meteoritics & Planetary Science, 46, 638-651, http://dx.doi.org/10.1111/j.1945-5100.2011.01180.x. | |
Izawa, R. M., King, P. L., Flemming, R. L., Peterson, R. C., Mccausland, P. J. A., 2010, Mineralogical and spectroscopic investigation of enstatite chondrites by X-ray diffraction and infrared reflectance spectroscopy. Journal of Geophysical Research: Planets, 115, E07008, http://dx.doi.org/10.1029/2009JE003452. | |
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. |