Antarctic Meteorite Petrographic Description

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Sample Petrographic Description

Sample Number

QUE 99038

Newsletter

24,1

Location

Queen Alexandra Range

Field Number

11672

Dimensions

5.5 x 3.5 x 1.5

Weight

52.68

Original Classification

CM2 Chondrite

Updated Classification

CM Chondrite (Anomalous)

Mineral Composition (%Fa & %Fs)

Fayalite (mol%): 1-39

Weathering

A/B

Fracturing

A/B

Macroscopic Description - Kathleen McBride

This carbonaceous chondrite has a dark gray to blackish crust, but appears to be a melted glob of chondrules spread over the entire exterior of the rock. The surface has a vesicular-like texture. The interior is charcoal gray with numerous mm-sized chondrules and light and dark gray crystalline materials. This meteorite is moderately hard and has a sulfurous odor.

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

The section consist of a few small chondrules (up to 1.5 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa_1-39, with many Fa_0-3. The matrix consists dominantly of an Fe-rich serpentine. The meteorite is a CM2 chondrite.

Reclassification Notes (AMN 41,1)

(Choe et al., 2010)

Antarctic Meteorite Images for Sample QUE 99038

Field Photo(s) :

ANSMET QUE 99038 - Field Number: 11672, NASA Photo Number: jsc2018e092069

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 QUE 99038

Lab Photo(s) :

Antarctic Meteorite Images for Sample QUE 99038

Thin Section Photo(s) :

Thin Section Photo of Sample QUE 99038 in Cross-Polarized Light with Magnification

Thin Section Photo of Sample QUE 99038 in Plane-Polarized Light with Magnification

Thin Section Photo of Sample QUE 99038 in Reflected Light with Magnification

References for Sample QUE99038

Takir, D., Stockstill-Cahill, K. R., Hibbitts, C. A., & Nakauchi, Y. , 2019, 3-µm reflectance spectroscopy of carbonaceous chondrites under asteroid-like conditions. , Icarus, 333 , 243-251 .

Takir, D., Emery, J. P., & McSween Jr, H. Y. , 2015, Toward an understanding of phyllosilicate mineralogy in the outer main asteroid belt. , Icarus, 257 , 185-193 .

Trigo-Rodriguez, J. M., Moyano-Cambero, C. E., Llorca, J., Fornasier, S., Barucci, M. A., Belskaya, I., Jacinto, A. A., 2014, UV to far-IR reflectance spectra of carbonaceous chondrites-I. Implications for remote characterization of dark primitive asteroids targeted by sample-return missions. , Monthly Notices of the Royal Astronomical Society, 437(1) , 227-240 .

Takir, D., Emery, J. P., Mcsween, H. Y., Hibbitts, C. A., Clark, R. N., Pearson, N., Wang, A., 2013, Nature and degree of aqueous alteration in CM and CI carbonaceous chondrites. , Meteoritics & Planetary Science, 48 , 1618-1637 , http://dx.doi.org/10.1111/maps.12171 .

Cloutis, E. A., Hudon, P., Hiroi, T., Gaffey, M. J., Mann, P. J., 2012, Spectral reflectance properties of carbonaceous chondrites: 8. "Other" carbonaceous chondrites: CH, ungrouped, polymict, xenolithic inclusions, and R chondrites , Icarus, 221 Issue 2 , November-December 2012 , 984-1001 , ISSN 0019-1035 , http://dx.doi.org/10.1016/j.icarus.2012.10.008 .

Choe, W. H., Huber, H., Rubin, A. E., Kallemeyn, G. W., Wasson, J. T., 2010, Compositions and taxonomy of 15 unusual carbonaceous chondrites. , Meteoritics & Planetary Science, 45 , 531-554 , http://dx.doi.org/10.1111/j.1945-5100.2010.01039.x .

Clark, B. E., Ockert-Bell, M. E., Cloutis, E. A., Nesvorny, D., Mothe-Diniz, T., Bus, S. J., 2009, Spectroscopy of K-complex asteroids: Parent bodies of carbonaceous meteorites? , Icarus, 202 Issue 1 , Jul-09 , 119-133 , ISSN 0019-1035 , http://dx.doi.org/10.1016/j.icarus.2009.02.027 .

Antarctic Meteorite Petrographic Description

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