Sample Petrographic Description
Sample Number | MET 00739 |
Newsletter | 26,1 |
Location | Meteorite Hills |
Field Number | 13176 |
Dimensions (cm) | 2.5 x 2.0 x 1.0 |
Weight (g) | 9.21 |
Original Classification | CK4 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 30;Ferrosilite (mol%): 25 | |
Weathering | |
B | |
Fracturing | |
B | |
Macroscopic Description - Kathleen McBride | |
40% of the exterior is covered with a dull black fusion crust that exhibits very tiny polygonal fractures. The interior reveals 1-2 mm size gray chondrules embedded in a soft, gray matrix. | |
Thin Section Description (,2) - Tim McCoy | |
The section consists of large (up to 2 mm), well-defined chondrules in a matrix of finer-grained silicates, sulfides and very abundant magnetite. The meteorite is little weathered, but extensively shock blackened. Olivine is Fa30 and orthopyroxene is Fs25. Plagioclase exhibits a broad range of compositions (An24-76). The meteorite is a CK4 chondrite. |
Antarctic Meteorite Images for Sample MET 00739 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample MET 00739 | ||||
Thin Section Photo(s) : | ||||
References for Sample MET00739 | |
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. | |
Rubin, A. E., Huber, H., 2005, A weathering index for CK and R chondrites. Meteoritics & Planetary Science, 40, 1123-1130, http://dx.doi.org/10.1111/j.1945-5100.2005.tb00178.x. |