Sample Petrographic Description
Sample Number | MIL 07702 |
Newsletter | 33,1 |
Location | Miller Range |
Field Number | 17565 |
Dimensions (cm) | 3.0 x 1.5 x 1.2 |
Weight (g) | 7.38 |
Original Classification | CM2 Chondrite |
Pairing | MIL 07672; MIL 07702; |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 0-19 | |
Weathering | |
B | |
Fracturing | |
A | |
Macroscopic Description - Roger Harrington, Kathleen McBride | |
The exterior of 07672 has black fusion crust with polygonal fractures and evaporites. Both CM2’s have a black fine grained matrix. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy, Linda Welzenbach, Karen Stockstill | |
The sections are so similar that a single description suffices. The sections consist of moderately abundant small chondrules (up to 0.5 mm), mineral grains, and CAIs set in a black matrix; rare metal, sulfide and carbonate grains are present. Chondrules are moderately to heavily altered. Olivine compositions are Fa0-19. Aqueous alteration of the matrix is substantial, but the chondrules are only modestly altered. The meteorites are CM2 chondrites. |
Antarctic Meteorite Images for Sample MIL 07702 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample MIL 07702 | ||||
Thin Section Photo(s) : | ||||