Antarctic Meteorite Petrographic Description

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Sample Petrographic Description

Sample Number

MET 00452

Newsletter

25,2

Location

Meteorite Hills

Field Number

13767

Dimensions (cm)

10.5 x 10.5 x 3.5

Weight (g)

774.90

Original Classification

H3.5 Chondrite

Updated Classification

L(LL)3.05 Chondrite

Pairing

MET 00452; MET 00526; MET 00621

Mineral Composition (%Fa & %Fs)

Fayalite (mol%): 2-19;Ferrosilite (mol%): 7

Weathering

B/Ce

Fracturing

Macroscopic Description - Kathleen McBride

The exterior has striated brown/black fusion crust with oxidation haloes. Some thin fractures and pits are visible. The interior is black matrix with rust-colored chondrules. Evaporites are visible along fractures. The meteorite is hard.

Thin Section Description (,2) - Gretchen Benedix, Linda Welzenbach, Tim McCoy

The section exhibits numerous small, well-defined chondrules (up to 1.5 mm) in a black matrix of fine-grained silicates, metal and troilite. Weak shock effects are present. Polysynthetically twinned pyroxene is extremely abundant. The meteorite is relatively weathered. Silicates are unequilibrated; olivines range from Fa_2-19. Orthopyroxene is Fs₇. The meteorite is an H3 chondrite (estimated subtype ~3.5).

Reclassification Notes (AMN 33,1)

Reclassified as an L(LL)3.05 Chondrite: Grossman, J.N. and Brearley, A. (2005) MaPS 40, 87-122.

Notes

Paired with MET 00526 based on Metsoc poster from 2015 meeting; Righter, K.; Satterwhite, C. E.; Schutt, J. (2015) Updates on Pairing Issues with the US Antarctic Meteorite Collection. 78th Annual Meeting of the Meteoritical Society, held July 27-31, 2015 in Berkeley, California. LPI Contribution No. 1856, abstract #5266. 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 00452

Field Photo(s) :

ANSMET MET 00452 - Field Number: 13767, NASA Photo Number: jsc2018e094586

Field photo image(s) courtesy of the ANSMET (ANtarctic Search for METeorites) Program, Case Western Reserve University and the University of Utah

References for Sample MET00452

Pape, J., Rose´n, A.V., Mezger, K., and Guillong, M., 2021, Primary crystallization and partial remelting of chondrules in the protoplanetary disk: Petrographic, mineralogical and chemical constraints recorded in zoned type-I chondrules. , Geochimica et Cosmochimica Acta, 292 , 499–517 , https://doi.org/10.1016/j.gca.2020.10.019 .

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 .

Schrader, D.L., Davidson, J., McCoy, T.J., Zega, T.J., Russell, S.S., Domanik, K.J., and King, A.J., 2021, The Fe/S ratio of pyrrhotite group sulfides in chondrites: An indicator of oxidation and implications for return samples from asteroids Ryugu and Bennu. , Geochimica et Cosmochimica Acta, 303 , 66–91 , https://doi.org/10.1016/j.gca.2021.03.019 .

Wang, X., Fitoussi, C., Bourdon, B., Righter, K., Amet, Q., 2021, The Sn isotope composition of chondrites: Implications for volatile element depletion in the Solar System. , Geochimica et Cosmochimica Acta, 312 , 139-157 , doi.org/10.1016/j.gca.2021.08.011 .

Schrader, D.L., Nagashima, K., Davidson, J., McCoy, T.J., Ogliore, R.C., Fu, R.R., 2020, Outward migration of chondrule fragments in the early solar system: O-isotopic evidence for rocky material crossing the Jupiter Gap?. , Geochimica et Cosmochimica Acta, 282 , 133-155 , doi: 10.1016/j.gca.2020.05.014.

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 .

Pape, J., Mezger, K., Bouvier, A. S., & Baumgartner, L. P., 2019, Time and duration of chondrule formation: Constraints from ²⁶Al-²⁶Mg ages of individual chondrules. , Geochimica et Cosmochimica Acta, 244 , 416-436 .

Bonal, L., Quirico, E., Flandinet, L., Montagnac, G., 2016, Thermal history of type 3 chondrites from the Antarctic meteorite collection determined by Raman spectroscopy of their polyaromatic carbonaceous matter. , Geochimica et Cosmochimica Acta, 189 , 312-337 .

Groopman, E., and Nittler L.R., Zinner, E., Amari, S., Gyngard, F., Hoppe, P., Jadhav, M., Lin, Y., Xu, Y., Marhas, K., 2015, Inferred initial 26Al/27Al ratios in presolar stardust grains from supernovae are higher than previously estimated. , The Astrophysical Journal, 809 , 31 (16 pages) , doi: 10.1088/0004-637X/809/1/31.

Weisberg, M.K., and Righter, K., 2015, Primitive Asteroids: Expanding the Range of Known Primitive Materials. 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. 65-77 .

Zega, T. J., Nittler, L. R., Gyngard, F., Alexander, C. M. O'D., Stroud, R. M., Zinner, E. K., 2014, A transmission electron microscopy study of presolar spinel. , Geochimica et Cosmochimica Acta, 124 , 1-Jan-14 , 152-169 , ISSN 0016-7037 , http://dx.doi.org/10.1016/j.gca.2013.09.010 .

Alexander, C. M., Newsome, S. D., Fogel, M. L., Nittler, L. R, Busemann, H., Cody, G. D., 2010, Deuterium enrichments in chondritic macromolecular material-Implications for the origin and evolution of organics, water and asteroids. , Geochimica et Cosmochimica Acta, 74(15) , 2010 , 4417-4437 .

Qin, L., Alexander, C. M. O'D., Carlson, R. W., Horan, M. F., Yokoyama, T., 2010, Contributors to chromium isotope variation of meteorites. , Geochimica et Cosmochimica Acta, 74 Issue 3 , 1-Feb-10 , 1122-1145 , ISSN 0016-7037 , http://dx.doi.org/10.1016/j.gca.2009.11.005 .

Aleon, J., 2010, Multiple origins of nitrogen isotopic anomalies in meteorites and comets. , The Astrophysical Journal, 722 , 1342–1351 , doi:10.1088/0004-637X/722/2/1342 .

Nittler, L. R., Alexander, C. M. O'D., Gallino, R., Hoppe, P., Nguyen, A. N., Stadermann, F. J., Zinner, E. K., 2008, Aluminum-, Calcium- and Titanium-rich Oxide Stardust in Ordinary Chondrite Meteorites. , ApJ, 682 , 1450 , http://dx.doi.org/10.1086/589430 .

Cody, G. D., Mysen, B. O., Alexander, C. M. O'D., Yabuta, H., Kilcoyne, A. L. D., Araki, T., Ade, H., Dera, P., Fogel, M., Militzer, B., 2008, Organic thermometry for chondritic parent bodies. , Earth and Planetary Science Letters, 272 Issues 1-2 , 30-Jul-08 , 446-455 , ISSN 0012-821X , http://dx.doi.org/10.1016/j.epsl.2008.05.008 .

Alexander, C. M. O'D., Fogel, M., Yabuta, H., Cody, G. D., 2007, The origin and evolution of chondrites recorded in the elemental and isotopic compositions of their macromolecular organic matter. , Geochimica et Cosmochimica Acta, 71 Issue 17 , 1-Sep-07 , 4380-4403 , ISSN 0016-7037 , http://dx.doi.org/10.1016/j.gca.2007.06.052 .

RELAB, , Reflectance Experiment Lab , catalogue of samples, .

Antarctic Meteorite Petrographic Description

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