Classification: Ordinary Chondrite L6
Explainer: This means that the sample is from an asteroid parent body. It represents early Solar System material which includes chondrules (small round melt droplets). It is from a very common type of chondrule-bearing meteorite called the ordinary chondrite class. This particular type is an ‘L’ type – meaning it has low concentrations of iron (i.e. iron metal). The meteorite is also a type 6 sample – which means that it has been moderately metamorphosed (heated and/or held under high pressure). You can see more about where this sample fits into the meteorite classification scheme by looking at this page.
Description: Taken from the Meteoritical Bulletin for OUT 19104
History: The meteorite was recovered as part of the Lost Meteorites of Antarctica project, which was funded in the UK by the Leverhulme Trust and supported by the British Antarctic Survey and the University of Manchester. These samples were collected as part of the project’s second field season in austral summer December 2019 – January 2020 by a six person field party consisting of Katherine Joy, Geoffrey Evatt, Romain Tartèse, Wouter Van Verre, Taff Raymond and Rob Taylor. Found 50% buried within ice at Outer Recovery 3 (west) Icefields. Altitude 1421 m.
Physical characteristics: Mass: 286.01 g. Pieces: 1. Dimensions: 7 × 5 × 4 cm. A round, whole stone with 90% dull black cracked fusion crust and light grey interior.
Petrography: Equilibrated texture with some clearly delineated chondrules up to 0.8 mm in diameter. Plagioclase grains up to 0.2 mm. Metal and sulfide grains up to 0.3 mm, distributed throughout.
Mineral compositions and geochemistry: All analyses by EPMA. Olivine Fa24.8±0.2 (N=10). Pyroxene Fs20.9±0.2Wo1.4±0.2 (N=12). Plagioclase An13.3±2.9Ab80.4±2.7Or6.3±2.6 (N=3).
Specimens: 285.98 g type specimen (main mass) held at the NHM London.
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