| Newsletter |
37,2 |
| Location |
Miller Range |
| Field Number |
22571 |
| Dimensions (cm) |
1.0 x 1.0 x 2.5 |
| Weight (g) |
2.97 |
| Original Classification |
CO3 Chondrite |
| Pairing |
MIL 11069;
MIL 11154;
MIL 11157;
MIL 11178;
MIL 11187;
MIL 11237;
MIL 11252;
MIL 11261;
|
| Fayalite (mol%): 0-58;Ferrosilite (mol%): 6.3 |
| B |
| A |
| The exteriors of these carbonaceous chondrites have black/brown fusion crust with oxidation haloes and rusty areas. The interiors range from dark gray to black matrix with some oxidation and tiny white specks. Most are fine grained. |
| These sections consist of abundant, small (up to 1 mm) chondrules, chondrule fragments, and mineral grains in a dark matrix. The matrix appears to consist largely of Fe-rich olivine. Metals and sulfides occur both within and rimming the chondrules. These meteorites have distinctly less metals and sulfides than the larger CO3 pairing group (MIL 07099). Olivine ranges in composition from Fa0-61, with a continuous range of intermediate compositions. Pyroxenes range Fs0-9Wo1-3. These meteorites are CO3 chondrites and are likely paired. |
| 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. |
