Sample Petrographic Description
Sample Number | MIL 11283 |
Newsletter | 38,1 |
Location | Miller Range |
Field Number | 22836 |
Dimensions (cm) | 0.75 x 0.75 x 0.5 |
Weight (g) | 0.23 |
Original Classification | Eucrite (Brecciated) |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 33-63 | |
Weathering | |
B | |
Fracturing | |
A | |
Macroscopic Description - Kathleen McBride | |
The exterior of this eucrite is covered with 100% dark brown to black fusion crust. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy, Pamela Salyer | |
This meteorite is dominated by exceptionally fine-grained (~200 micron average grain size) clastic material with occasional coarser clasts of pyroxene and plagioclase. These also occur as isolated grains within the matrix. The section is 80% rimmed by fusion crust. Mineral compositions are pyroxene of Fs33-63Wo5-24, and plagioclase of An83-90Or0.5. The Fe/Mn ratio of the pyroxene is ~30. The meteorite is a brecciated eucrite. |
Antarctic Meteorite Images for Sample MIL 11283 | ||||
Thin Section Photo(s) : | ||||