Sample Petrographic Description
| Sample Number | SCO 06040 |
| Newsletter | 30,2 |
| Location | Scott Glaciers |
| Field Number | 17705 |
| Dimensions (cm) | 5.5 x 4.5 x 2.0 |
| Weight (g) | 60.16 |
| Original Classification | Howardite |
| Mineral Composition (%Fa & %Fs) | |
| Ferrosilite (mol%): 19-65 | |
| Weathering | |
| A/B | |
| Fracturing | |
| A/B | |
| Macroscopic Description - Kathleen McBride | |
| 50% of the exterior surface has shiny black fusion crust. The gray matrix has angular clasts of various sizes and colors. | |
| Thin Section Description - Tim McCoy, Lauren LaCroix, Linda Welzenbach | |
| The meteorite is a breccia of basaltic clasts, orthopyroxene grains, and coarse-grained orthopyroxenites in a comminuted matrix. Clasts reach up to 1 mm. Carbonaceous chondrite (presumably CM2) clasts up to 2 mm are present. Pyroxene compositions range over Fs19-65Wo2-44 (Fe/Mn~23-37). Plagioclase is An88-94Or1. Within the carbonaceous clasts, olivine is Fa0-1 and pyroxene is Fs7. The meteorite is a howardite. | |
| Antarctic Meteorite Images for Sample SCO 06040 | ||||
| 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 SCO 06040 | ||||
| Lab Photo(s) : | ||||
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| Antarctic Meteorite Images for Sample SCO 06040 | ||||
| Thin Section Photo(s) : | ||||
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| References for Sample SCO06040 | |
| Righter, K., Holmwood, A.P., 2020, Mineralogy and petrology of dark clasts in the Allan Hills 76005 polymict eucrite pairing group. , Meteoritics & Planetary Science, 55 , 781-799 , doi: 10.1111/maps.13465. | |
| Moriarty, D. P., Pieters, C. M., 2016, Complexities in pyroxene compositions derived from absorption band centers: Examples from Apollo samples, HED meteorites, synthetic pure pyroxenes, and remote sensing data. , Meteoritics & Planetary Science, 51(2) , 207-234 . | |
| Mittlefehldt, D. W., 2015, Asteroid (4) Vesta: I. The howardite-eucrite-diogenite (HED) clan of meteorites. , Chemie der Erde - Geochemistry, 75 Issue 2 , Jun-15 , 155-183 , ISSN 0009-2819 , http://dx.doi.org/10.1016/j.chemer.2014.08.002 . | |
| Mittlefehldt, D. W., Herrin, J. S., Quinn, J. E., Mertzman, S. A., Cartwright, J. A., Mertzman, K. R., Peng, Z. X., 2013, Composition and petrology of HED polymict breccias: The regolith of (4) Vesta. , Meteoritics & Planetary Science, 48 , 2105-2134 , http://dx.doi.org/10.1111/maps.12182 . | |
| RELAB, , Reflectance Experiment Lab , catalogue of samples, . | |