Sample Petrographic Description
Sample Number | MIL 07440 |
Newsletter | 34,1 |
Location | Miller Range |
Field Number | 17562 |
Dimensions (cm) | 5.6 x 3.8 x 2.3 |
Weight (g) | 118.46 |
Original Classification | R4 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 38;Ferrosilite (mol%): 10 | |
Weathering | |
Be | |
Fracturing | |
A | |
Macroscopic Description - Cecilia Satterwhite | |
Exterior has black patches of fusion crust. Most of the exterior is gray with some evaporites. The interior is mottled gray with some darker gray areas and has a coarse grained texture. | |
Thin Section Description (,2) - Cari Corrigan, Linda Welzenbach | |
This section consist of ~50% of well-defined (up to 1 mm) chondrules and chondrule fragments set in a slightly recrystallized matrix of silicates and sulfides (both troilite and pentlandite). Olivines (Fs10) and pyroxenes (Fa38) are nearly homogeneous. The meteorite is an R chondrite, probably of petrologic type 4. |
Antarctic Meteorite Images for Sample MIL 07440 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample MIL 07440 | ||||
Thin Section Photo(s) : | ||||
References for Sample MIL07440 | |
Rubin, A. E., & Ma, C. , 2017, Meteoritic minerals and their origins. . Chemie der Erde-Geochemistry, 77, 325-385, http://dx.doi.org/10.1016/j.chemer.2017.01.005. | |
Khan, R., Shirai, N., Ebihara, M., 2015, Chemical characteristic of R chondrites in the light of P, REEs, Th and U abundances. Earth and Planetary Science Letters, 422, 18-27, http://dx.doi.org/10.1016/j.epsl.2015.04.008. | |
Rubin, A. E., 2014, Shock and annealing in the amphibole- and mica-bearing R chondrites. Meteoritics & Planetary Science, 49, 1057-1075. | |
RELAB, , Reflectance Experiment Lab , catalogue of samples. |