Sample Petrographic Description
Sample Number | MIL 13079 |
Newsletter | 38,2 |
Location | Miller Range |
Field Number | 21106 |
Dimensions (cm) | 3.6 x 2.2 x 1.0 |
Weight (g) | 11.57 |
Original Classification | Eucrite (Brecciated) |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 24-62 | |
Weathering | |
A | |
Fracturing | |
A/B | |
Macroscopic Description - Mitchell Haller | |
70% of the exterior has glossy jet black fusion crust and minor fractures. Areas without fusion crust are gray with some oxidation. The interior is gray matrix with black and white inclusions and minor weathering. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy | |
The section consists of a coarsely comminuted pyroxenes (up to 1 mm) and feldspar (up to 0.5) mm set in a fine-grained matrix. Polyminerallic clasts are scarce, with most fragments being monominerallic. Mineral compositions are homogeneous with orthopyroxene (Fs62Wo2), with lamellae of augite (Fs24Wo47), and plagioclase (An88Or0.5). The Fe/Mn ratio of the pyroxene is ~28. The meteorite is a brecciated eucrite. |
Antarctic Meteorite Images for Sample MIL 13079 | ||||
Lab Photo(s) : | ||||
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Antarctic Meteorite Images for Sample MIL 13079 | ||||
Thin Section Photo(s) : | ||||
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