Sample Petrographic Description
Sample Number | LAR 06691 |
Newsletter | 32,2 |
Location | Larkman Nunatak |
Field Number | 19569 |
Dimensions (cm) | 2.5 x 1.5 x 2.0 |
Weight (g) | 17.66 |
Original Classification | Mesosiderite |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 28-3 | |
Weathering | |
B/C | |
Fracturing | |
A | |
Macroscopic Description - Kathleen McBride | |
85% of the exterior has brown/black fusion crust with oxidation haloes and pits. The fine grained matrix is a gray color with a few very large grains. Sample is extremely rusty. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy, Linda Welzenbach | |
This section consists of fragmented pyroxene and plagioclase grains set in a clastic, metal-rich matrix. Grains reach up to several mm in size. Pyroxene is relatively homogeneous (Fs28-35Wo2-6; Fe/Mn~30) and plagioclase is An90-95Or1. The meteorite is probably a silicate clast from a mesosiderite. |
Antarctic Meteorite Images for Sample LAR 06691 | ||||
Thin Section Photo(s) : | ||||