| Newsletter |
38,1 |
| Location |
Miller Range |
| Field Number |
21462 |
| Dimensions (cm) |
2.0 x 1.7 x 1.3 |
| Weight (g) |
9.33 |
| Original Classification |
CO3 Chondrite |
| Pairing |
MIL 11069;
MIL 11154;
MIL 11157;
MIL 11178;
MIL 11187;
MIL 11237;
MIL 11252;
MIL 11261;
|
| Fayalite (mol%): 0-43;Ferrosilite (mol%): 9 |
| A/Be |
| A/B |
| All of these carbonaceous chondrites have black fusion crust on exterior surfaces. A few have evaporites. The interiors are a black matrix with gray to white inclusion/chondrules and some oxidation. |
| These sections consist of abundant small (up to 1 mm) chondrules, chondrule fragments and mineral grains in a dark matrix. Metal and sulfide occur both within and rimming the chondrules. Olivine ranges in composition from Fa0-68, with a continuous range of intermediate compositions. Pyroxenes range Fs1-10Wo1-3 with one outlier of Fs46. The matrix appears to consist largely of Fe-rich olivine. These meteorites are CO3 chondrites and are likely paired with the large MIL CO3 pairing group. |
| MIL 11069 pairing group has decidedly lower Type II chondrule olivine Cr2O3 contents than the other large MIL group. Given the geographic location of these members and their olivine compositions, we add three additional samples to this group – MIL 11178, MIL 11187, and MIL 11261 – for a total of eight samples. MIL 11178, 11187 and 11261 had been part of the MIL 07099 pairing group. |
