Sample Petrographic Description
Sample Number | MIL 13174 |
Newsletter | 40,1 |
Location | Miller Range |
Field Number | 22495 |
Dimensions (cm) | 0.7 x 2.0 x 0.5 |
Weight (g) | 2.61 |
Original Classification | Mesosiderite |
Pairing | MIL 13174; MIL 15058; |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 28-57 | |
Weathering | |
Be | |
Fracturing | |
A/B | |
Macroscopic Description - Rachel Funk | |
90% black/brown fusion crust with minor evaporites and rust are visible on the exterior surface. One fracture penetrates the surface. The black matrix has orange rust present and metal is visible. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy, Nicole Lunning | |
This meteorite is dominated by orthopyroxene, clinopyroxene and plagioclase grains in a matrix of approximately 30% metal. Minor sulfide and chromite grains are present with sulfide often occurring as dispersed, small grains surrounding larger metal grains. Grain sizes are up to 1 mm. Pyroxenes are zoned orthopyroxene, Fs28-57Wo2-11, and exsolved clinopyroxene with augite Fs25-27Wo42-45. Feldspars are An88-91. This small meteorite is probably a metal rich clast from a mesosiderite, although metal rich eucrites are known. |
Antarctic Meteorite Images for Sample MIL 13174 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample MIL 13174 | ||||
Thin Section Photo(s) : | ||||