Sample Petrographic Description
| Sample Number | MET 01075 |
| Newsletter | 25,2 |
| Location | Meteorite Hills |
| Field Number | 13829 |
| Dimensions (cm) | 4.0 x 3.0 x 1.5 |
| Weight (g) | 29.94 |
| Original Classification | CM2 Chondrite |
| Pairing | MET 01071; MET 01072; MET 01075; MET 01078 |
| Mineral Composition (%Fa & %Fs) | |
| Fayalite (mol%): 0-46 | |
| Weathering | |
| B | |
| Fracturing | |
| B | |
| Macroscopic Description - Kathleen McBride | |
| The amount of fusion crust on these meteorites ranges from 30 to 60%. All have purplish fusion crust with polygonal fractures and rust on some surfaces. Interiors reveal a black, platy matrix with 1 mm-sized white inclusions. These meteorites are friable. | |
| Thin Section Description (,2) - Gretchen Benedix, Linda Welzenbach, Tim McCoy | |
| The sections consist of a few small chondrules (up to 0.5 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa0-61,with the majority of olivine falling around Fa1; orthopyroxene is Fs1-4. MET 01072 and 01078 exhibit foliated texture with somewhat flattened chondrules. The matrix consists dominantly of an Fe-rich serpentine. The meteorites are CM2 chondrites. | |
| Antarctic Meteorite Images for Sample MET 01075 | ||||
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| Antarctic Meteorite Images for Sample MET 01075 | ||||
| Thin Section Photo(s) : | ||||
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| References for Sample MET01075 | |
| Lee, M.R., Cohen, B.E., Boyce, A.J., Hallis, LJ., and Daly, L., 2021, The pre-atmospheric hydrogen inventory of CM carbonaceous chondrites. , Geochimica et Cosmochimica Acta, 309 , 31-44 , https://doi.org/10.1016/j.gca.2021.06.013 . | |
| Lee, M.R., Cohen, B.E. , and King, A.J., 2019, Alkali-halogen metasomatism of the CM carbonaceous chondrites. , Meteorit Planet Sci, 54 , 3052-3063 , doi:10.1111/maps.13405 . | |
| Lee, W. R., Cohen, B. E., and King, A. J., 2019, Alkali-halogen metasomatism of the CM carbonaceous chondrites. , Meteoritics & Planetary Science, 54 , 3052-3063 , doi: 10.111/maps.13405. | |
| Alexander, C. M. O'D., Bowden, R., Fogel, M. L., Howard, K. T., 2015, Carbonate abundances and isotopic compositions in chondrites. , Meteoritics & Planetary Science, 50 , 810-833 , http://dx.doi.org/10.1111/maps.12410 . | |
| Alexander, C.O'D. M. O, Bowden,. R., Fogel, M. L., Howard, K. T., Herd, C. D. K., Nittler, L. R., 2012, The provenances of asteroids, and their contributions to the volatile inventories of the terrestrial planets. , Science, 337(6095) , 2012 , 721-723 . | |