Sample Petrographic Description
Sample Number | GRA 06172 |
Newsletter | 30,2 |
Location | Graves Nunataks |
Field Number | 17772 |
Dimensions (cm) | 3.5 x 2.5 x 2.0 |
Weight (g) | 21.07 |
Original Classification | CM2 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 1-44;Ferrosilite (mol%): 3 | |
Weathering | |
B | |
Fracturing | |
B | |
Macroscopic Description - Kathleen McBride | |
50% purplish black fusion crust with polygonal fractures covers the exterior. The exposed interior has a vesicular texture. The interior is a black matrix with light color chondrules | |
Thin Section Description (,2) - Tim McCoy, Linda Welzenbach | |
The section consists of a numerous minimally-altered chondrules (up to 1 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa1-44, orthopyroxene is Fs3. The meteorite is a CM2 chondrite. |
Antarctic Meteorite Images for Sample GRA 06172 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample GRA 06172 | ||||
Thin Section Photo(s) : | ||||