Sample Petrographic Description
Sample Number | EET 96002 |
Newsletter | 21,1 |
Location | Elephant Moraine |
Field Number | 10640 |
Dimensions (cm) | 3.0 x 2.0 x 1.5 |
Weight (g) | 10.12 |
Original Classification | Howardite |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 26-52 | |
Weathering | |
B | |
Fracturing | |
B | |
Macroscopic Description - Kathleen McBride | |
The exterior of this meteorite has brown, bubbly fusion crust. Patches of black, glassy material are visible in certain areas on the fusion crust. The interior is a fine grained, tan matrix with numerous inclusions. These include one perfectly round, black glass bead, numerous green crystalline fragments, some as large as 5 mm across, basalt fragments and light gray and white fragments. Clear crystals and reddish mineral grains are found near the fusion crust. This meteorite was brecciated and very friable. | |
Thin Section Description (,4) - Brian Mason | |
The section shows a microbreccia of comminuted pyroxene and plagioclase (grains up to 0.3 mm) with a few larger plagioclase clasts (up to 2.4 mm). Microprobe analyses show that most of the pyroxene is hypersthene (compositions clustered around Wo3Fs26) with some pigeonite (Wo5-14Fs35-52). Plagioclase composition is An91-95. The meteorite is a howardite. |
Antarctic Meteorite Images for Sample EET 96002 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample EET 96002 | ||||
Thin Section Photo(s) : | ||||
References for Sample EET96002 | |
Mayne, R. G., Smith, S. E., Corrigan, C. M., 2016, Hiding in the howardites: Unequilibrated eucrite clasts as a guide to the formation of Vesta's crust. Meteorit Planet Sci, 51, 2387–2402, doi:10.1111/maps.12730. |