Sample Petrographic Description
Sample Number | QUE 94368 |
Newsletter | 19,1 |
Location | Queen Alexandra Range |
Field Number | 10809 |
Dimensions (cm) | 1.5 x 1.0 x 0.5 |
Weight (g) | 1.23 |
Original Classification | E5 Chondrite |
Updated Classification | EL4 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 0-2 | |
Weathering | |
C | |
Fracturing | |
B | |
Macroscopic Description - Kathleen McBride | |
The exterior of QUE94368 is shiny and iridescent. The interior is heavily oxidized and has a sugary texture. | |
Thin Section Description (,2) - Brian Mason | |
The section shows numerous chondrules and irregular aggregates, up to 0.6 mm across, and mineral grains in a moderate amount of dark matrix. The matrix contains a minor amount of nickel-iron and sulfides. The chondrules, aggregates, and mineral grains appear to consist entirely of pyroxene. Weathering is extensive, with veinlets and patches of brown limonite throughout the section. Microprobe analyses show that most of the pyroxene is close to MgSiO3 in composition, but a few more iron-rich grains were analysed. The nickel-iron contains 0.5-0.7% Si. The meteorite is classified as an E5 chondrite. | |
Reclassification Notes (AMN 31,1) | |
Reclassified as EL4 Chondrite in AMN 31,1. Reference: A.E.Rubin, 1997, LPSC 28, 1201 |
Antarctic Meteorite Images for Sample QUE 94368 | ||||
Thin Section Photo(s) : | ||||
References for Sample QUE94368 | |
Rubin, A. E., & Ma, C. , 2017, Meteoritic minerals and their origins. . Chemie der Erde-Geochemistry, 77, 325-385, http://dx.doi.org/10.1016/j.chemer.2017.01.005. | |
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. | |
Van Niekerk, D., Keil, K., 2011, Metal/sulfide-silicate intergrowth textures in EL3 meteorites: Origin by impact melting on the EL parent body. Meteoritics & Planetary Science, 46, 1484-1497, http://dx.doi.org/10.1111/j.1945-5100.2011.01244.x. | |
Rubin, A. E., 1997, Sinoite (Si2N2O): Crystallization from EL chondrite impact melts. Amer. Mineral., 82, 1001-1006. | |
, PLATE Preface-Pictorial Guide to Selected Meteorites, 2015, In Righter, K., Corrigan, C.M., McCoy, T.J., and Harvey, R.P. Meteorites: A Pictorial Guide to the Collection, First Edition, AGU Wiley, Book Plates. |