Sample Petrographic Description
Sample Number | GRA 06173 |
Newsletter | 30,2 |
Location | Graves Nunataks |
Field Number | 17756 |
Dimensions (cm) | 1.0 x 1.0 x 2.0 |
Weight (g) | 5.51 |
Original Classification | CK4 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 31 | |
Weathering | |
A/B | |
Fracturing | |
A/B | |
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 Description (,2) - Tim McCoy, 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. |
Antarctic Meteorite Images for Sample GRA 06173 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample GRA 06173 | ||||
Thin Section Photo(s) : | ||||