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Outer Recovery Icefields 18007
Basic information Name: Outer Recovery Icefields 18007
     This is an OFFICIAL meteorite name.
Abbreviation: OUT 18007
Observed fall: No
Year found: 2019
Country: Antarctica [Collected by the Lost Meteorites of Antarctica project, UK]
Mass:help 29.6 g
Recommended:  L6    [explanation]

This is 1 of 11582 approved meteorites (plus 10 unapproved names) classified as L6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 6 May 2021
Writeup from MB 110:

Outer Recovery Icefields 18007 (OUT 18007)        81°28.58333’S, 18°01.46983’W

Antarctica, Antarctica

Find: 2019 Jan 09

Classification: Ordinary chondrite (L6)

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 first field season in austral summer December 2018 - January 2019 by a two person field party consisting of Katherine Joy and Julie Baum. Found on blue ice surface at Outer Recovery Icefields ice field 3 (west icefield). Altitude 1399 m.

Physical characteristics: Mass: 29.63 g. Pieces: 1. Dimensions: 3.5 cm × 3 cm × 2 cm. A round, part stone with 50% black fusion crust and light gray interior. Cross-cutting black impact melt veins on fractured surface.

Petrography: Equilibrated texture, poorly defined chondrules. Areas of plagioclase up to 100 micrometres. Metal and sulfide grains up to 0.7 mm. Thin cross-cutting impact melt veins are present.

Geochemistry: Mineral compositions and geochemistry: All analyses by EPMA. Olivine Fa25.3±0.7 (N=6), Pyroxene Fs21.5±0.6Wo1.6±0.3 (N=11).

Classification: Ordinary chondrite (L6)

Specimens: 29.15 g type specimen (main mass) held at the NHM London.

Data from:
  Table 0
  Line 0:
Origin or pseudonym:Outer Recovery Icefields
Date:2019 Jan 09
Mass (g):29.63
Weathering grade:B
Fayalite (mol%):25.3±0.7 (N=6)
Ferrosilite (mol%):21.5±0.6 (N=11)
Wollastonite (mol%):1.6±0.3 (N=11)
Magnetic suscept.:4.65
Classifier:J. L. MacArthur, K. H. Joy and R. H. Jones, UMan
Type spec mass (g):29.15
Type spec location:NHM London
Main mass:NHM London
Finder:Katherine Joy
Comments:Field ID:000007 BAS ID: Z18.3.3; submitted by J. L. MacArthur, UMan
   and collections
NHM: Department of Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom; Website (institutional address; updated 9 Dec 2011)
UMan: Department of Earth Sciences, University of Manchester, Oxford Road, Manchester, M139PL, United Kingdom (institutional address)
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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Public domain photographs:
Jane MacArthur      

     Recommended::   (81° 28' 35"S, 18° 1' 28"W)

     This is 1 of 40773 approved meteorites from Antarctica (plus 4570 unapproved names)
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