Sample Petrographic Description
Sample Number | RBT 04309 |
Newsletter | 29,2 |
Location | Roberts Massif |
Field Number | 15148 |
Dimensions (cm) | 1.75 x 1.0 x 0.5 |
Weight (g) | 1.26 |
Original Classification | CM2 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 1-50 | |
Weathering | |
Be | |
Fracturing | |
B | |
Macroscopic Description - Kathleen McBride | |
100% of the exterior is covered with brown/black fusion crust with polygonal fractures. The interior is a black matrix with evaporites and dark chondrules. | |
Thin Section Description (,2) - Tim McCoy, Emma Bullock | |
The section consists of a few small chondrules (up to 0.5 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa1-50. The matrix consists pre-dominantly of an Fe-rich serpentine. The meteorite is a CM2 chondrite. |
Antarctic Meteorite Images for Sample RBT 04309 | ||||
Thin Section Photo(s) : | ||||