Sample Petrographic Description
Sample Number | MIL 05050 |
Newsletter | 29,2 |
Location | Miller Range |
Field Number | 18758 |
Dimensions (cm) | 8.5 x 5.5 x 4.0 |
Weight (g) | 253.30 |
Original Classification | L3 Chondrite |
Updated Classification | L3.6 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 6-25;Ferrosilite (mol%): 3-17 | |
Weathering | |
B | |
Fracturing | |
A/B | |
Macroscopic Description - Kathleen McBride | |
85% of this ordinary chondrites exterior has rough brown/black fusion crust with polygonal fractures. The interior is a black matrix with abundant chondrules of various sizes and colors. | |
Thin Section Description (,2) - Tim McCoy | |
The section exhibits numerous small, well-defined chondrules (up to 1.5 mm) in a black matrix of fine-grained silicates, metal and troilite. Silicates are unequilibrated; olivines range from Fa6-25 and pyroxenes are Fs3-17. The meteorite is an L3 chondrite (estimated subtype 3.6). | |
Reclassification Notes (AMN 29,2) | |
Classification updated to L3.6, as announced in AMN vol. 29, no. 2. |
Antarctic Meteorite Images for Sample MIL 05050 | ||||
Thin Section Photo(s) : | ||||
References for Sample MIL05050 | |
Eschrig, J., Bonal, L., Mahlke, M., Carry,B., Beck, P., Gattacceca, J., 2022, Investigating S-type asteroid surfaces through reflectance spectra of ordinary chondrites, Icarus, 381. | |
Eschrig, J., Bonal, L., Beck, P., Prestgard, T.J., 2021, Spectral reflectance analysis of type 3 carbonaceous chondrites and search for their asteroidal parent bodies. Icarus, 354, 114034, https://doi.org/10.1016/j.icarus.2020.114034. |