Sample Petrographic Description
Sample Number | GRA 06158 |
Newsletter | 31,1 |
Location | Graves Nunataks |
Field Number | 17726 |
Dimensions (cm) | 1.25 x 1.0 x 0.75 |
Weight (g) | 1.33 |
Original Classification | CM2 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 1-23;Ferrosilite (mol%): 3-4 | |
Weathering | |
B/C | |
Fracturing | |
B | |
Macroscopic Description - Kathleen McBride | |
75% of the exterior is a rough black fusion crust. The interior is a brown/black matrix with an oxidation rind. | |
Thin Section Description (,2) - Tim McCoy, Cari Corrigan, Linda Welzenbach | |
The section consists of abundant small chondrules (up to 2 mm), chondrule fragments, mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa1-23 and orthopyroxene is Fs3-4. The matrix consists dominantly of an Fe-rich serpentine. The meteorite is a CM2 chondrite. |
Antarctic Meteorite Images for Sample GRA 06158 | ||||
Thin Section Photo(s) : | ||||