Newsletter |
35,1 |
Location |
Miller Range |
Field Number |
20212 |
Dimensions (cm) |
1.5 x 1.25 x 1.0 |
Weight (g) |
3.12 |
Original Classification |
CB Chondrite |
Updated Classification |
CBa Chondrite |
Pairing |
MIL 05082;
MIL 07404;
MIL 07411;
MIL 07558;
MIL 07588;
MIL 07598;
MIL 090985;
|
Fayalite (mol%): 3-15;Ferrosilite (mol%): 0-25 |
B/C |
B/C |
The exterior surface is rusty gray with no fusion crust. The interior matrix is gray and rusty, containing large chondrules >3mm in size. |
The sections consist of one round metal chondrule (~0.5 cm in diameter) and chondrule fragments. Chondrule fragments up to 1 mm are dominated by radiating pyroxene textures with olivine present. Silicates are magnesian (Fa3-15, Fs0-25Wo1-5). The meteorite is a CB chondrite and may be a member of the MIL 05082 pairing group. |
MIL 05082 and its pairs have cm-sized chondrules, and are clearly part of the CBa subgroup of CB chondrites; see more detailed discussion in Weisberg, M.K. and Righter, K. (2014). Primitive Asteroids. In 35 Seasons of U.S. Antarctic Meteorites (1976–2010) (eds K. Righter, C.M. Corrigan, T.J. McCoy and R.P. Harvey). |