Sample Petrographic Description
Sample Number | MIL 13315 |
Newsletter | 40,1 |
Location | Miller Range |
Field Number | 21331 |
Dimensions (cm) | 1.5 x 1.0 x 0.9 |
Weight (g) | 1.46 |
Original Classification | Eucrite |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 26-62 | |
Weathering | |
A | |
Fracturing | |
B/C | |
Macroscopic Description - Rachel Funk | |
35% black fusion crust is present on the exterior surface. The exposed interior is gray with black and white minerals. The black fine grained interior matrix has white grains visible and minor yellow inclusions. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy | |
This meteorite is dominated by coarse-grained (~1 mm average size) pyroxene and feldspar grains. Two fine-grained (cataclastic) zones cross-cut the specimen. Mineral compositions are homogeneous with orthopyroxene (Fs62Wo2), with lamellae of augite (Fs26Wo44), and plagioclase (An86Or1). The Fe/Mn ratio of the pyroxene is ~30. The meteorite is a eucrite. |
Antarctic Meteorite Images for Sample MIL 13315 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample MIL 13315 | ||||
Thin Section Photo(s) : | ||||