Sample Petrographic Description
Sample Number | QUE 93030 |
Newsletter | 18,1 |
Location | Queen Alexandra Range |
Field Number | 8249 |
Dimensions (cm) | 9.2 x 7.0 x 7.4 |
Weight (g) | 896.90 |
Original Classification | H3.6 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 6-20;Ferrosilite (mol%): 11-17 | |
Weathering | |
B/C | |
Fracturing | |
A/B | |
Macroscopic Description - Cecilia Satterwhite | |
QUE93030 is mostly covered with black fusion crust. Some exterior surfaces are pitted; some have oxidation haloes. Areas devoid of fusion crust are brown and small inclusions are visible. Cleaving this chondrite revealed a medium gray matrix with yellowish-brown oxidation uniformly scattered throughout. A thick dark brown oxidation rind is present. Only a few light and dark inclusions are discernible. | |
Thin Section Description (,2) - Brian Mason | |
The section shows numerous chondrules (up to 1.5 mm across), chondrule fragments, and mineral grains in a dark brown to black matrix. Nickel-iron grains are abundant in the matrix; troilite is present in lesser amounts. The meteorite is severely weathered. Microprobe analyses show a wide range in olivine and pyroxene compositions: olivine, Fa6-20, mean Fa14; pyroxene, Fs11-17. The variable olivine and pyroxene compositions indicate type 3, and the amount of nickel-iron H group; the meteorite is therefore classified as an H3 chondrite (estimated H3.6). |
Antarctic Meteorite Images for Sample QUE 93030 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample QUE 93030 | ||||
Thin Section Photo(s) : | ||||
References for Sample QUE93030 | |
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. | |
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. | |
Menzies, O. N., Bland, P. A., Berry, F. J., Cressey, G., 2005, A M”ssbauer spectroscopy and X-ray diffraction study of ordinary chondrites: Quantification of modal mineralogy and implications for redox conditions during metamorphism. Meteoritics & Planetary Science, 40, 1023-1042, http://dx.doi.org/10.1111/j.1945-5100.2005.tb00171.x. | |
Benoit, P. H., Akridge, G. A., Ninagawa, K., Sears, D. W. G., 2002, Thermoluminescence sensitivity and thermal history of type 3 ordinary chondrites: Eleven new type 3.0-3.1 chondrites and possible explanations for differences among H, L, and LL chondrites. Meteoritics & Planetary Science, 37, 793-805. | |
RELAB, , Reflectance Experiment Lab , catalogue of samples. |