Sample Petrographic Description
Sample Number | MET 01071 |
Newsletter | 25,2 |
Location | Meteorite Hills |
Field Number | 13044 |
Dimensions (cm) | 3.0 x 1.5 x 0.75 |
Weight (g) | 4.50 |
Original Classification | CM2 Chondrite |
Pairing | MET 01071; MET 01072; MET 01075; MET 01078; |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 0-61;Ferrosilite (mol%): 2-4 | |
Weathering | |
B | |
Fracturing | |
B | |
Macroscopic Description - Kathleen McBride | |
The amount of fusion crust on these meteorites ranges from 30 to 60%. All have purplish fusion crust with polygonal fractures and rust on some surfaces. Interiors reveal a black, platy matrix with 1 mm-sized white inclusions. These meteorites are friable. | |
Thin Section Description (,2) - Gretchen Benedix, Linda Welzenbach, Tim McCoy | |
The sections consist 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 Fa0-61,with the majority of olivine falling around Fa1; orthopyroxene is Fs1-4. MET 01072 and 01078 exhibit foliated texture with somewhat flattened chondrules. The matrix consists dominantly of an Fe-rich serpentine. The meteorites are CM2 chondrites. |
Antarctic Meteorite Images for Sample MET 01071 | ||||
Lab Photo(s) : | ||||
References for Sample MET01071 | |
Alexander, C.M.O'D., Wynn, J.G., and Bowden, R., 2022, Sulfur abundances and isotopic compositions in bulk carbonaceous chondrites and insoluble organic material: Clues to elemental and isotopic fractions of volatile chalcophiles, Meteoritics & Planetary Science, 57, 334-351, doi:10.1111/maps.13746. |