Sample Petrographic Description
| Sample Number | MET 00607 |
| Newsletter | 26,1 |
| Location | Meteorite Hills |
| Field Number | 13152 |
| Dimensions (cm) | 7.5 x 3.0 x 2.0 |
| Weight (g) | 76.55 |
| Original Classification | H3.4 Chondrite |
| Updated Classification | H3.10 Chondrite |
| Pairing | MET 00506; MET 00552; MET 00607 |
| Mineral Composition (%Fa & %Fs) | |
| Fayalite (mol%): 3-25;Ferrosilite (mol%): 7-18 | |
| Weathering | |
| B | |
| Fracturing | |
| A | |
| Macroscopic Description - Kathleen McBride, Cecilia Satterwhite | |
| These ordinary chondrites have dark brown to black fusion crust containing fractures, pits and oxidation haloes. The interiors are rusty brown/black with mm-sized chondrules. | |
| Thin Section Description (,2) - Tim McCoy | |
| These meteorites are so similar that a single description suffices, although MET 00607 was recovered ~2.5 km from the MET 00506 and MET 00552. The sections exhibit numerous small, well-defined chondrules (up to 2 mm) in a black matrix of fine-grained silicates, metal and troilite. Polysynthetically twinned pyroxene is extremely abundant. Weathering effects are pervasive. Olivines range from Fa1-27 and pyroxenes from Fs1-18. The meteorites are H3 chondrites (estimated subtype 3.4). | |
| Reclassification Notes (AMN 44,2) | |
| Reclassified as an H3.10 Chondrite based on Cr contents of Type II chondrule olivine. Pairing groups adjusted based on olivine composition and recovery location. Righter, K., Schutt, J., Lunning, N., Harvey, R., & Karner, J. (2021a) Identification and pairing reassessment of unequilibrated ordinary chondrites from four Antarctic dense collection areas. Meteoritics & Planetary Science 56, 1556-1578. | |
| Antarctic Meteorite Images for Sample MET 00607 | ||||
| Field Photo(s) : | ||||
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| Field photo image(s) courtesy of the ANSMET (ANtarctic Search for METeorites) Program, Case Western Reserve University and the University of Utah | ||||
| Antarctic Meteorite Images for Sample MET 00607 | ||||
| Lab Photo(s) : | ||||
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| References for Sample MET00607 | |
| Righter, K., Schutt, J., Lunning, N., Harvey, R, and Karner, J., 2021, Identification and pairing reassessment of unequilibrated ordinary chondrites from four Antarctic dense collection areas. , Meteoritics & Planetary Science, 56 , 1556-1573 , doi: 10.1111/maps.13707 . | |
| RELAB, , Reflectance Experiment Lab , catalogue of samples, . | |