| Newsletter |
44,2 |
| Location |
Dominion Range |
| Field Number |
25482 |
| Dimensions (cm) |
3.8 x 3.5 x 3.0 |
| Weight (g) |
59.49 |
| Original Classification |
CO3 Chondrite |
| Fayalite (mol%): 0-49;Ferrosilite (mol%): 1-33 |
| A/B |
| A/B |
| The exterior is about 15% covered in a rough, black fusion crust that appears vesicular. The exposed exterior is frothy and dark brownish-gray with a slight green tint. There are light gray or orange-brown inclusions in the exposed interior. The interior is a light gray matrix with some small areas of orange-brown rust. The interior texture is sugary with a few dark inclusions under 1 mm in size as well as a few very small metal grains. |
| The sections consist of abundant small (up to 1 mm) chondrules, chondrule fragments, CAIs, and mineral grains in a dark matrix. Metal and sulfide occur within and rimming the chondrules. Olivine ranges in composition from Fa0-60. Pyroxene analyses range from Fs0-33. Terrestrial weathering effects are modest. Meteorites are similar enough that one description suffices, and they are likely paired. The meteorites are CO3 chondrites and may be members of the larger Dominion Range CO3 pairing group (named for DOM 08004). |
| Originally classified as a CO3 and part of the DOM 08004 pairing group, the sample has H, C, and N bulk and isotopic, cosmic ray exposure age (~3 Ma), magnetic susceptibility, and thermoluminescence properties that are distinct from the DOM 08004 and other DOM CO3 pairing groups. It is therefore unpaired from DOM 08004. Details are reported in Righter et al. (2023) LPSC, #2139. |
