Sample Petrographic Description
Sample Number | MIL 07582 |
Newsletter | 32,2 |
Location | Miller Range |
Field Number | 17521 |
Dimensions (cm) | 2.1 x 1.9 x 1.5 |
Weight (g) | 12.42 |
Original Classification | Acapulcoite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 10;Ferrosilite (mol%): 11 | |
Weathering | |
B/C | |
Fracturing | |
A | |
Macroscopic Description - Cecilia Satterwhite | |
The exterior is covered with brown/black fusion crust with some oxidation. The interior has a crystalline texture and is brown in color with rusty areas and metal. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy, Linda Welzenbach | |
The section consists of an equigranular aggregate of olivine, pyroxene, plagioclase, and metal with minor sulfide and chromite, with an average grain size of 0.5 mm, with some grains up to 1 mm. Olivine (Fa10) and pyroxene (Fs11) are homogeneous. One calcic pyroxene grain was analyzed (Fs4). This section is moderately weathered. The meteorite is an acapulcoite. |
Antarctic Meteorite Images for Sample MIL 07582 | ||||
Thin Section Photo(s) : | ||||
References for Sample MIL07582 | |
Tomkins, A.G., Johnson, T.E., Mitchell, J.T., 2020, A review of the chondrite-achondrite transition, and a metamorphic facies series for equilibrated primitive stony meteorites. Meteoritics & Planetary Science, 55, 857-885, doi: 10.1111/maps.13472. | |
Keil, K., McCoy, T.J., 2018, Acapulcoite-lodranite meteorites: Ultramafic asteroidal partial melt residues. Chemie der Erde, 78, 153-203, https://doi.org/10.1016/j.chemer.2017.04.004. |