Sample Petrographic Description
Sample Number | LAR 04319 |
Newsletter | 28,2 |
Location | Larkman Nunatak |
Field Number | 15550 |
Dimensions (cm) | 2.5 x 1.0 x 0.5 |
Weight (g) | 1.70 |
Original Classification | CM2 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 0-27 | |
Weathering | |
A/B | |
Fracturing | |
A/B | |
Macroscopic Description - Kathleen McBride | |
The exterior of this carbonaceous chondrite is covered with 100% thick brown/black fusion crust with polygonal fractures. The interior is a black matrix with tiny white inclusions. | |
Thin Section Description (,3) - Tim McCoy | |
The section consists of numerous small chondrules (up to 1 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Chondrules exhibit relatively little alteration and are set in a matrix of serpentine. Olivine compositions are Fa0-27, with a strong peak at Fa0-2. The meteorite is a CM2 chondrite. |
Antarctic Meteorite Images for Sample LAR 04319 | ||||
Thin Section Photo(s) : | ||||