Antarctic Meteorite Petrographic Description

Breadcrumbs

Home → Antarctic Meteorites → Antarctic Meteorite Petrographic Description

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

52.680

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

References for Sample QUE99038

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

Site Actions

Site Sections

Current Site Section

Breadcrumbs

Sample Petrographic Description

Footer

Bottom Navigation