Sample Petrographic Description
| Sample Number | LAR 12002 |
| Newsletter | 36,2 |
| Location | Larkman Nunatak |
| Field Number | 22620 |
| Dimensions (cm) | 17.5 x 12.7 x 12.6 |
| Weight (g) | 4855.00 |
| Original Classification | CV3 Chondrite |
| Mineral Composition (%Fa & %Fs) | |
| Fayalite (mol%): 0-34 | |
| Weathering | |
| A/B | |
| Fracturing | |
| A/B | |
| Macroscopic Description - Cecilia Satterwhite | |
| The exterior has a rough texture with patches of brown/black fractured fusion crust with abundant white, greenish-blue evaporites. The areas without fusion crust are dark gray to black color with abundant chondrules and CAIs visible. The interior is a dark gray to black matrix with abundant white and rusty inclusions, chondrules and CAIs of various sizes. Some oxidation is present. | |
| Thin Section Description (,2) - Cari Corrigan, Linda Welzenbach | |
| The section exhibits large chondrules (up to 3 mm) and CAIs in a dark matrix. Olivines range from Fa0-34. The meteorite is an unequilibrated CV3 chondrite. | |
| Antarctic Meteorite Images for Sample LAR 12002 | ||||
| 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 LAR 12002 | ||||
| Lab Photo(s) : | ||||
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| Antarctic Meteorite Images for Sample LAR 12002 | ||||
| Thin Section Photo(s) : | ||||
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| Antarctic Meteorite Scans for Sample LAR 12002 | ||||
| XCT Scan(s) : | ||||
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XCT Scan of Sample LAR 12002 |
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| References for Sample LAR12002 | |
| Hiroi, T., Ohtsuka, K., Howard, K.T., Robertson, K.R., and Milliken, R.E., Kaiden, H., Imae, N., Misawa, K., Kojima, H., Sasakia, S., Matsuokaa, M., Nakamura, T., Bish, D.L., 2021, UV-visible-infrared spectral survey of Antarctic carbonaceous chondrite chips. , Polar Science, 29 , 100723 , https://doi.org/10.1016/j.polar.2021.100723 . | |
| 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 . | |
| Beck, A.W., Peplowski, P.N., Yokley, Z.W., 2020, A miniaturized XRF instrument for in situ planetary exploration: The Active X-Ray Spectrometer (AXRS). , Planetary and Space Science, 190 , 104990 . | |
| Bloom, H., Lodders, K., Chen, H., Zhao, C., Tian, Z., Koefoed, P., Petö, M.K., Jiang, J., and Wang, K., 2020, Potassium isotope compositions of carbonaceous and ordinary chondrites: Implications on the origin of volatile depletion in the early solar system. , Geochimica et Cosmochimica Acta, 277 , 111–131 . | |
| Nielsen, S. G., Auro, M., Righter, K., Davis, D., Prytulak, J., Wu, F., & Owens, J. D., 2019, Nucleosynthetic vanadium isotope heterogeneity of the early solar system recorded in chondritic meteorites. , Earth and Planetary Science Letters, 505 , 131-140 . | |
| Harvey, R.P., Schutt, J., and Karner, J., 2015, Fieldwork Methods of the U.S. Antarctic Search for Meteorites Program. In Righter, K., Corrigan, C.M., McCoy, T.J., and Harvey, R.P. Meteorites: A Pictorial Guide to the Collection, First Edition , AGU Wiley, , pp. 23-41 . | |
| RELAB, , Reflectance Experiment Lab , catalogue of samples, . | |