Sample Petrographic Description
Sample Number | DOM 10299 |
Newsletter | 34,2 |
Location | Dominion Range |
Field Number | 18421 |
Dimensions (cm) | 2.8 x 2.0 x 1.5 |
Weight (g) | 14.81 |
Original Classification | CO3 Chondrite |
Updated Classification | CM2 Chondrite |
Pairing | DOM 10121; DOM 10299; |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 1-66 | |
Weathering | |
A/Be | |
Fracturing | |
B/C | |
Macroscopic Description - Kathleen McBride, Cecilia Satterwhite | |
Black fractured fusion crust with evaporites and some oxidation is visible to varying degrees on these paired carbonaceous chondrites. The interiors are dark gray to black in color with white inclusions/chondrules some stained with oxidation and rust. These meteorites contain some metal and are moderately weathered. | |
Thin Section Description (,2) - Cari Corrigan, Linda Welzenbach, Nicole Lunning | |
These meteorites are so similar that a single description suffices. The sections consist of abundant small (up to 1 mm) chondrules, chondrule fragments and mineral grains in a dark matrix. Metal and sulfide occur within and rimming the chondrules. Glass within chondrules appears to be very clear/fresh. CAIs are abundant (mostly Type A), and range in size up to 1 mm. AOAs up to 1 mm are present, as well. Olivine ranges in composition from Fa0-66. These meteorites exhibit mild terrestrial alteration. These are CO3 chondrites (likely type 3.0-3.2), and are paired with the DOM 08004. | |
Reclassification Notes (AMN 44,2) | |
Reclassified to a CM2 chondrite based on cosmic ray exposure age, C, N, and H contents. Righter K., Alexander, C., Foustoukos, D., Mertens, C.A.K., Busemann, H., Schutt, J. (2021b) Pairing Relations Within CO3 Chondrites Recovered at the Dominion Range and Miller Range, Transantarctic Mountains, 84th Annual Meteoritical Society meeting, Chicago, abstract #6191. |
Antarctic Meteorite Images for Sample DOM 10299 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample DOM 10299 | ||||
Thin Section Photo(s) : | ||||