Sample Petrographic Description
Sample Number | LAR 12283 |
Newsletter | 38,2 |
Location | Larkman Nunatak |
Field Number | 23943 |
Dimensions (cm) | 4.0 x 2.6 x 2.0 |
Weight (g) | 26.23 |
Original Classification | Ureilite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 3-21 | |
Weathering | |
B/Ce | |
Fracturing | |
A/B | |
Macroscopic Description - Cecilia Satterwhite | |
The rough pebbly textured exterior has 25% black fusion crust. The interior is a black matrix with metal and brown oxidation. It has a platy texture with crystal faces visible. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy | |
The section consists of an aggregate of large olivine grains up to 2 mm across. Individual olivine grains are rimmed by carbon-rich material containing traces of metal. Olivines have cores of Fa21, with rims reduced to Fa3. The meteorite is a ureilite. |
Antarctic Meteorite Images for Sample LAR 12283 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample LAR 12283 | ||||
Thin Section Photo(s) : | ||||