Sample No.: EET83254

Location: Elephant Moraine

Weight (g): 7.7

Field No.: 1340

Dimensions (cm): 2 x 2 x 1.5

Meteorite Type: E4 Chondrite

Macroscopic Description: Carol Schwarz

EET83254 is an angular fragment that is very shiny and iridescent with a small patch of fusion crust remaining. The interior is dark brown with a small amount of evaporite deposit present.

Thin Section (,2) Description: Brian Mason

Chondrules and chondrule fragments are abundant, and are set in a granular groundmass of pyroxene, nickel-iron, and sulfides. The chondrules range up to 0.6 mm across (a few fragments are larger), and consist of granular or prismatic pyroxene (small olivine grains are present in a few chondrules). Brown limonitic staining pervades the section. Microprobe analyses show that most of the pyroxene is close to MgSiO3 in composition, with FeO less than 1%, but a few grains show higher FeO content, up to 6.4%. The nickel-iron contains 2.6% Si. Since much of the pyroxene is polysynthetically twinned clinoenstatite, the meteorite is classed as an E4 chondrite. It is similar to EET83307 and EET83322, and the possibility of pairing should be considered.