Sample Petrographic Description
Sample Number | MET 01244 |
Newsletter | 26,2 |
Location | Meteorite Hills |
Field Number | 13050 |
Dimensions (cm) | 5.0 x 3.5 x 3.0 |
Weight (g) | 76.49 |
Original Classification | Acapulcoite |
Pairing | MET 01195; MET 01198; MET 01212; MET 01232; MET 01244; |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 9;Ferrosilite (mol%): 9 | |
Weathering | |
C | |
Fracturing | |
A/B | |
Macroscopic Description - Kathleen McBride | |
The exteriors of these meteorites are covered with brown/black fusion crust with oxidation haloes. The interiors are a fine-grained, rusty, crystalline material with some metal. | |
Thin Section Description (,2) - Tim McCoy, Linda Welzenbach | |
The meteorites are so similar that a single description suffices. The sections consist of an equigranular aggregate with grains up to 0.5 mm. Minerals include olivine (Fa8-9), orthopyroxene (Fs9), chromian diopside (Fs3-4Wo44-45), phosphates, metal and troilite. Metal and sulfide occur as large grains, veinlets and metal-sulfide blebs within orthopyroxene. Weathering is moderate, with extensive staining. The meteorites are acapulcoites. |
Antarctic Meteorite Images for Sample MET 01244 | ||||
Lab Photo(s) : | ||||
References for Sample MET01244 | |
Hidaka, Y., Shirai, N., Yamaguchi, A., & Ebihara, M., 2019, Siderophile element characteristics of acapulcoite–lodranites and winonaites: Implications for the early differentiation processes of their parent bodies. Meteoritics & Planetary Science, 54, 1153-1166. | |
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. | |
Rochette, P., Gattacceca, J., Bourot-Denise, M., Consolmagno, G., Folco, L., Kohout, T., Pesonen, L., Sagnotti, L., 2009, Magnetic classification of stony meteorites: 3. Achondrites. Meteoritics & Planetary Science, 44, 405-427, http://dx.doi.org/10.1111/j.1945-5100.2009.tb00741.x. |