Petrographic Descriptions (Select a sample)
Antarctic Meteorite Newsletter 31,1 - Petrographic Descriptions
| Sample No.: | LAR 06868 |
| Location: | Larkman Nunatak |
| Field No.: | 19994 |
| Dimensions (cm): | 3.0 x 2.5 x 1.0 |
| Weight (g): | 15.367 |
| Meteorite Type: | CK5 Chondrite |
| Pairing: | LAR 06868, LAR 06871, LAR 06874 |
Macroscopic Description: Kathleen McBride
The fusion crust on the exteriors of these meteorites is brown/black with polygonal fractures. The interiors are gray to black matrix, fine grained with some evaporites. Inclusions/chondrules are light colored.
Thin Section (,2) Description: Tim McCoy, Linda Welzenbach and Cari Corrigan
The sections consist of large (up to 2 mm) chondrules in a matrix of finer-grained silicates, sulfides and magnetite. The meteorites are extensively shock blackened. Silicates are homogeneous. Olivine is Fa29-31 and orthopyroxene is Fs25-26 across the pairing group. The meteorites are CK5 chondrites
Thin Section Images
| Plane-Polarized Light LAR 06868 |
Cross-Polarized Light LAR 06868 |
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Lab Images
| North View LAR 06868 |
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