Sample Petrographic Description
| Sample Number | LAP 02228 |
| Newsletter | 26,2 |
| Location | LaPaz Ice Field |
| Field Number | 15409 |
| Dimensions (cm) | 7.25 x 5.0 x 5.0 |
| Weight (g) | 335.80 |
| Original Classification | CV3 Chondrite |
| Pairing | LAP 02206; LAP 02228 |
| Mineral Composition (%Fa & %Fs) | |
| Fayalite (mol%): 1-45;Ferrosilite (mol%): 0-1 | |
| Weathering | |
| B | |
| Fracturing | |
| A/B | |
| Macroscopic Description - Kathleen McBride | |
| The exteriors of these meteorites are covered with a rough, black fusion with polygonal fractures. The interior reveals a medium to dark gray matrix with white, irregularly shaped inclusions. A few dark crystalline clasts are present. Chrondrules are mm sized and are gray or rust in color. | |
| Thin Section Description (,5) - Tim McCoy, Linda Welzenbach | |
| The sections are so similar that a single description suffices. The sections exhibit large chondrules (up to 3 mm) and CAIs in a dark matrix with minor metal and sulfide. Olivines range from Fa0-45, with many Fa0-5, and pyroxenes from Fs0-2. The meteorites are CV3 chondrites. | |
| Antarctic Meteorite Images for Sample LAP 02228 | ||||
| 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 LAP 02228 | ||||
| Lab Photo(s) : | ||||
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| Antarctic Meteorite Images for Sample LAP 02228 | ||||
| Thin Section Photo(s) : | ||||
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| References for Sample LAP02228 | |
| Yesiltas, M., Young, J., Glotch, T., 2021, Thermal metamorphic history of Antarctic CV3 and CO3 chondrites inferred from the first- and second-order Raman peaks of polyaromatic organic carbon. , American Mineralogist, 106 , 506-517 , doi: 10.2138/am-2021-7507 . | |
| Jogo, K., Ito, M., Wakita, S., Kobayashi, S., & Lee, J. I., 2019, Origin of the metamorphosed clasts in the CV 3 carbonaceous chondrite breccias of Graves Nunataks 06101, Vigarano, Roberts Massif 04143, and Yamato-86009. , Meteoritics & Planetary Science, 54 , 1133-1152 . | |
| Ishida, H., Nakamura, T., Miura, H., Kakazu, Y., 2012, Diverse mineralogical and oxygen isotopic signatures recorded in CV3 carbonaceous chondrites. , Polar Science, 6 Issues 3-4 , August-November 2012 , 252-262 , ISSN 1873-9652 , http://dx.doi.org/10.1016/j.polar.2012.06.002 . | |
| 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 . | |