Name: Elephant Moraine 90992 This is an OFFICIAL meteorite name. Abbreviation: EET 90992 Observed fall: No Year found: 1990 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 5.7 g
Sample No.: EET90992 Location: Elephant Moraine Dimensions (cm): 1.9 x 1.6 x 0.7 Weight (g): 5.7 Meteorite Type: EL3 chondrite
Macroscopic Description: Cecilia Satterwhite Twenty percent of the exterior of this chondrite is covered with shiny, brown fusion crust. A few small light-colored and heavily weathered inclusions are visible in the dark gray to black matrix. Oxidation is heavy in areas.
Thin Section (,2) Description: Brian Mason The section consists mostly of chondrules and chondrule fragments up to 2.1 mm across; they consist of granular or radiating pyroxene, sometimes with a little olivine. The opaque material consists largely of nickel-iron with minor sulfides. Minor weathering is indicated by brown staining and occasional limonite areas. The section is partially rimmed with fusion crust. Microprobe analyses show that most of the pyroxene is close to MgSiO3 in composition, but FeO contents up to 2.7% were recorded. The metal contains 0.7-1.1% Si. One grain of plagioclase, An9Or2, was analyzed. The meteorite is classified as an enstatite chondrite, EL3, it is similar to EET90299, and the possibility of pairing should be considered.
5.7 g