Petrographic Descriptions (Select a sample)
| Sample Number | LAR 06774 |
|---|---|
| Pairing | LAR 06343, LAR 06469, LAR 06772, LAR 06774 |
| Newsletter | 31,2 |
| Location | Larkman Nunatak |
| Field Number | 19990 |
| Dimensions | 3.0 x 2.5 x 1.5 |
| Weight | 23.55 |
| Original Classification | LL3 Chondrite |
| Macroscopic Description - Kathleen McBride | |
| The exteriors of these paired meteorites are covered with brown/black smooth fusion crust. The interiors are a rusty black to gray color with high metal content and chondrules of various sizes and colors. | |
| Thin Section (,2) Description - Tim McCoy and Cari Corrigan | |
| The sections exhibit numerous large (up to 2 mm), well-defined chondrules in a dark matrix of fine-grained silicates, metal and troilite. Polysynthetically twinned pyroxene is abundant. The meteorites are lightly weathered. Silicates are unequilibrated; olivines range from Fa8-40, with a large peak at Fa28-30, and pyroxenes from Fs14-24. The meteorites are LL3 chondrites, probably of subtype ~3.8. | |
