Newsletter |
21,2 |
Location |
Elephant Moraine |
Field Number |
9730 |
Dimensions (cm) |
2.5 x 2.0 x 1.0 |
Weight (g) |
8.45 |
Original Classification |
H4 Chondrite |
Updated Classification |
H4 Chondrite (Anomalous) |
Pairing |
EET 96031;
EET 96037;
EET 96040;
EET 96047;
EET 96123;
|
Fayalite (mol%): 16;Ferrosilite (mol%): 14 |
C |
B |
50% of the exterior of this ordinary chondrite has black, bubbly fusion crust with numerous vesicles and dull luster with iridescent oxidation halos. The matrix is very rusty and friable, with numerous yellowish and gray chondrules present. Abundant metal grains are visible. |
The section is a close-packed aggregate of chondrules (usually less than 1 mm across), chondrule fragments and mineral grains in a dark matrix with abundant metal and troilite. The meteorite is moderately weathered and shocked. Polysynthetically twinned pyroxene is common. Olivine (Fa16) and low Ca pyroxene compositions (Fs14) are below the range typical for H chondrites and similar to a small group of chondrites such as Willaroy (1993, GCA 57, 1867). The meteorite is an unusual H4 chondrite and is almost certainly paired with the EET 96031 pairing group. |
anomalous due to reduced nature (AMN 21(1)) |