Sample Petrographic Description
Sample Number | MCY 05229 |
Newsletter | 29,2 |
Location | MacKay Glacier |
Field Number | 17344 |
Dimensions (cm) | 3.5 x 2.5 x 1.5 |
Weight (g) | 9.75 |
Original Classification | CM2 Chondrite |
Pairing | MCY 05229; MCY 05230; MCY 05242; MCY 05245; MCY 05251; |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 1-28 | |
Weathering | |
B | |
Fracturing | |
B | |
Macroscopic Description - Kathleen McBride | |
The fusion crust on the exteriors of these carbonaceous chondrites range from brown to black to purplish patches and some have polygonal fractures. The interiors are a black soft matrix with mm sized white inclusions. | |
Thin Section Description (,2) - Tim McCoy, Emma Bullock | |
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 Fa0-40, pyroxene is Fs1-6. The matrix consists pre-dominantly of an Fe-rich serpentine. The meteorites are CM2 chondrites. |
Antarctic Meteorite Images for Sample MCY 05229 | ||||
Thin Section Photo(s) : | ||||
References for Sample MCY05229 | |
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. |