Sample Petrographic Description
Sample Number | MIL 15031 |
Newsletter | 40,1 |
Location | Miller Range |
Field Number | 24161 |
Dimensions (cm) | 7.0 x 5.0 x 5.0 |
Weight (g) | 237.30 |
Original Classification | CM2 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 1-44;Ferrosilite (mol%): 23 | |
Weathering | |
B | |
Fracturing | |
B/C | |
Macroscopic Description - Cecilia Satterwhite | |
Brown/black fractured patchy fusion crust covers 60% of this meteorite’s exterior surface; evaporites are heavy in some areas; fractures penetrate the surface; areas w/o fusion crust are black. The interior is a black matrix with heavy evaporite deposits; some light gray to white inclusions are visible. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy | |
The section consists of a few small (up to 0.5 mm) chondrules, mineral grains and CAIs set in a black matrix. Rare metal and sulfide grains are present. Olivine compositions are Fa1-44, orthopyroxene is Fs23. Aqueous alteration of the matrix is substantial, but the chondrules are only modestly altered. The meteorite is a CM2 chondrite. |
Antarctic Meteorite Images for Sample MIL 15031 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample MIL 15031 | ||||
Thin Section Photo(s) : | ||||