Newsletter |
33,1 |
Location |
Miller Range |
Field Number |
17983 |
Dimensions (cm) |
1.0 x 1.0 x 1.0 |
Weight (g) |
1.36 |
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%): 1-3;Ferrosilite (mol%): 1-3 |
A/B |
A |
The exterior is a gray color with some patches of weathered fusion crust and oxidation. The matrix is gray with some metal, oxidation and mm sized light, dark and weathered inclusions, |
The section consists of metal and chondrules. Metal occurs as rounded particles up to 4 mm in diameter. Chondrules and chondrule fragments up to 0.5 mm are dominated by radiating pyroxene textures with olivine present. Silicates are magnesian (Fa1-3, Fs1-3). The meteorite is a CB chondrite and may be paired with MIL 05082. |
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). |