Antarctic Meteorite Petrographic Description

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Sample Petrographic Description

Sample Number

QUE 93744

Newsletter

18,2

Location

Queen Alexandra Range

Field Number

8246

Dimensions (cm)

2.0 x 1.6 x 1.0

Weight (g)

7.66

Original Classification

CV3 Chondrite

Pairing

QUE 93429; QUE 93639; QUE 93744; QUE 94688

Mineral Composition (%Fa & %Fs)

Fayalite (mol%): 1-10;Ferrosilite (mol%): 1-2

Weathering

B/C

Fracturing

Macroscopic Description - Cecilia Satterwhite

This carbonaceous chondrite has 50% of its exterior covered with frothy black fusion crust. Some rust-colored areas are visible on the exterior. The interior is dark-brown to black in color, fine-grained with abundant oxidation scattered throughout. Some small light-gray inclusions are visible.

Thin Section Description (,2) - Brian Mason

The section shows numerous chondrules and irregular aggregates, up to 1.5 mm across, in a black matrix. The matrix contains accessory amounts of nickel-iron and troilite. Microprobe analyses show that most of the olivine in the chondrules is close to Mg₂SiO₄ in composition, but ranges up to Fa₁₀; pyroxene composition is Fs_1-2. The matrix appears to consist largely of iron-rich olivine, about Fa₅₀. The meteorite is classified as a C3 chondrite of the Vigarano subtype; it is very similar to QUE93429 and 93639, with which it is probably paired.

Antarctic Meteorite Images for Sample QUE 93744

Lab Photo(s) :

Antarctic Meteorite Images for Sample QUE 93744

Thin Section Photo(s) :

Thin Section Photo of Sample QUE 93744 in Cross-Polarized Light

Thin Section Photograph of Sample QUE 93744 in Plane-Polarized Light

References for Sample QUE93744

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 .

Le Corre, L., Reddy, V., Sanchez, J. A., Dunn, T., Cloutis, E. A, Izawa, M. R. M, Mann, P., Nathues, A., 2015, Exploring exogenic sources for the olivine on Asteroid (4) Vesta. , Icarus, 258 , 483-499 .

Cloutis, E. A., Hudon, P., Hiroi, T., Gaffey, M. J., Mann, P. J., Bell Iii, J. F., 2012, Spectral reflectance properties of carbonaceous chondrites: 6. CV chondrites. , Icarus, 221 Issue 1 , September-October 2012 , 328-358 , ISSN 0019-1035 , http://dx.doi.org/10.1016/j.icarus.2012.07.007 .

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 .

Schultz, L., Franke, L., 2004, Helium, neon, and argon in meteorites: A data collection. , Meteoritics & Planetary Science, 39 , 1889-1890 , http://dx.doi.org/10.1111/j.1945-5100.2004.tb00083.x .

Benoit, P. H., Sears, D. W. G., Akridge, J. M. C., Bland, P. A., Berry, F. J., Pillinger, C. T., 2000, The non-trivial problem of meteorite pairing. , Meteoritics & Planetary Science, 35 , 393-417 .

Scherer, P., Schultz, L., 2000, Noble gas record, collisional history, and pairing of CV, CO, CK, and other carbonaceous chondrites. , Meteoritics & Planetary Science, 35 , 145-153 .

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

Antarctic Meteorite Petrographic Description

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