Sample Petrographic Description
Sample Number | QUE 99609 |
Newsletter | 25,1 |
Location | Queen Alexandra Range |
Field Number | 11405 |
Dimensions (cm) | |
Weight (g) | 24.51 |
Original Classification | Eucrite (Brecciated) |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 59 | |
Weathering | |
B | |
Fracturing | |
C | |
Macroscopic Description - Kathleen McBride | |
The exterior has a shiny black fusion crust with yellow rust-colored circular splotches. The interior is powdery, light gray matrix and very friable. Submillimeter clasts of gray and white are mixed throughout. * Meteorite was returned broken into numerous chips and fines. The largest piece shows that the rock was circular in shape or perhaps like a disk. Measurement from fusion crust to fusion crust is ~1.5 cm. |
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Thin Section Description (,2) - Tim McCoy, Linda Welzenbach, Gretchen Benedix | |
This meteorite consists of a finely comminuted matrix containing individual mineral grains of plagioclase and pyroxene and basaltic to gabbroic clasts up to 2 mm in diameter, which themselves exhibit a wide range of grains sizes. Pyroxenes are finely exsolved with end member compositions for orthopyroxene of Fs59Wo3 and augite of Fs29Wo40. Plagioclase is An90. The Fe/Mn ratio of the pyroxene is ~27. The meteorite is a brecciated eucrite. |
Antarctic Meteorite Images for Sample QUE 99609 | ||||
Lab Photo(s) : | ||||