| Newsletter |
34,2 |
| Location |
Dominion Range |
| Field Number |
21888 |
| Dimensions (cm) |
4.5 x 2.6 x 2.1 |
| Weight (g) |
26.09 |
| Original Classification |
CO3 Chondrite |
| Pairing |
DOM 08004; DOM 08139; DOM 08351; DOM 10101; DOM 10104; DOM 10900; DOM 14019; DOM 14127; DOM 14305; DOM 18019; DOM 18069; DOM 18070; DOM 18286; DOM 19034; DOM 19049; DOM 19068; DOM 19099; DOM 19170; DOM 19179 |
| Fayalite (mol%): 1-45 |
| A/B |
| A/B |
| 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. |
| 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. |
| Removed several pairing group members (DOM 10121, DOM 10299, DOM 10847, and DOM 14359) based on petrography, CRE ages, Cr contents of olibvine, and H, C and N bulk and isotopic compositions. 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. |
| pairing group updated for AMN 44 no. 2 based on information in :
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. |
