Newsletter |
25,2 |
Location |
Bates Nunataks |
Field Number |
12075 |
Dimensions (cm) |
2.5 x 2.0 x 1.5 |
Weight (g) |
15.81 |
Original Classification |
H3.3 Chondrite |
Pairing |
BTN 00301;
BTN 00302;
BTN 00303;
|
Fayalite (mol%): 1-30;Ferrosilite (mol%): 2-19 |
B |
B |
The exterior of these chondrites have approximately 50% brown/black fusion crust with polygonal fractures and oxidation haloes. The interiors are composed of a black matrix with numerous chondrules that are gray, white and rust in color. The size range is 1-2 mm in diameter. There are various odd shaped inclusions 1-3 mm in length of the same colors as well as some that are tan in color. These meteorites are hard. |
These sections exhibit numerous small, well-defined chondrules (up to 1.5 mm) in a black matrix of fine-grained silicates, metal and troilite. Weak shock effects are present. Polysynthetically twinned pyroxene is extremely abundant. Silicates are unequilibrated; olivines range from Fa1-38 and pyroxenes from Fs2-21. The meteorites are H3 chondrites (estimated subtype 3.3). |