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Petrographic Descriptions (Select a sample)
| Sample No.: | GRA 06173 |
| Location: | Graves Nunataks |
| Field No.: | 17756 |
| Dimensions (cm): | 1.0 x 1.0 x 2.0 |
| Weight (g): | 5.505 |
| Meteorite Type: | CK4 Chondrite |
Macroscopic Description: Kathleen McBride
100% shiny, black fusion crust with polygonal fractures covers the exterior. The interior is a gray matrix with gray chondrules.
Thin Section (,2) Description: Tim McCoy and Linda Welzenbach
The section consists of large (up to 2 mm), well-defined chondrules in a matrix of finer-grained silicates, sulfides and magnetite. The meteorite is a little weathered, but extensively shock blackened. Silicates are homogeneous. Olivine is Fa31. Plagioclase is An36-63. The meteorite appears to be a CK4 chondrite.
Thin Section Images
| Plane-Polarized Light GRA 06173 |
Cross Polarized Light GRA 06173 |
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Lab Images
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