Newsletter |
21,2 |
Location |
Elephant Moraine |
Field Number |
9825 |
Dimensions (cm) |
5.0 x 2.5 x 1.0 |
Weight (g) |
12.68 |
Original Classification |
C2 Chondrite |
Updated Classification |
CM2 Chondrite |
Pairing |
EET 96005;
EET 96006;
EET 96007;
EET 96011;
EET 96012;
EET 96013;
EET 96014;
EET 96016;
EET 96017;
EET 96019;
EET 96029;
EET 96096;
EET 96097;
EET 96098;
EET 96226;
|
Fayalite (mol%): 0-32;Ferrosilite (mol%): 4 |
B |
B/C |
These carbonaceous chondrites have minor amounts of fusion crust on their black exteriors. The interiors reveal a dark black matrix with abundant white to tan colored inclusions/chondrules. All are friable. |
The sections consist of a few small chondrules (up to 0.5 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine shows a broad range of compositions (Fa0-42) with most grains Fa0-2. Pyroxene is Fs1-6. The matrix consists dominantly of an Fe-rich serpentine. The meteorites are C2 chondrites that are paired with each other and quite possibly with the EET96005 pairing group. |
Many carbonaceous chondrites were initially classified as C2 in early newsletters. These are mostly CM2, based on matrix properties, chondrules abundance and sizes, and therefore all these samples have been reclassified more specifically here as CM2. |