Sample Petrographic Description
Sample Number | MIL 15231 |
Newsletter | 40,1 |
Location | Miller Range |
Field Number | 23090 |
Dimensions (cm) | 2.4 x 1.5 x 1.5 |
Weight (g) | 4.94 |
Original Classification | CM2 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 1-42 | |
Weathering | |
B | |
Fracturing | |
A/B | |
Macroscopic Description - Cecilia Satterwhite | |
80% of the exterior surface has black fractured fusion crust with small deposits of evaporites; areas without fusion crust are a brownish color. The interior is a fine grained black matrix with small white inclusions; oxidation is visible and heavy along the rim. | |
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 Fa1-42. 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 15231 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample MIL 15231 | ||||
Thin Section Photo(s) : | ||||