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Outer Recovery Icefields 19131
Basic information Name: Outer Recovery Icefields 19131
     This is an OFFICIAL meteorite name.
Abbreviation: OUT 19131
Observed fall: No
Year found: 2020
Country: Antarctica [Collected by the Lost Meteorites of Antarctica project, UK]
Mass:help 941 g
Recommended:  LL6    [explanation]

This is 1 of 2884 approved meteorites (plus 2 unapproved names) classified as LL6.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 23 Nov 2021
Writeup from MB 110:

Outer Recovery Icefields 19131 (OUT 19131)        81°34.74600’S, 17°28.00900’W


Find: 2020 Jan 14

Classification: Ordinary chondrite (LL6)

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 on blue ice surface at Outer Recovery 4 (south) Icefields. Altitude 1547 m.

Physical characteristics: Mass: 941.072 g. Pieces: 1. Dimensions: 12 × 8 × 4 cm. A blocky, whole, light-gray stone with 60% fusion crust and black, glassy exterior. Black, glassy fusion crust.

Petrography: Equilibrated texture with very poorly defined chondrules (up to 1 mm in diameter). Metal and sulfide grains up to 0.4 mm distributed throughout.

Geochemistry: Mineral compositions and geochemistry: All analyses by EPMA. Olivine Fa33.2±0.3 (N=10), Pyroxene Fs27.0±0.6Wo1.6±0.3 (N=12). Plagioclase An10.2±0.2Ab83.8±0.7Or6.1±0.5 (N=3).

Classification: Ordinary chondrite (LL6).

Specimens: 941.07 g type specimen (main mass) held at the NHM London.

Data from:
  Table 0
  Line 0:
Origin or pseudonym:Outer Recovery 4 (south) Icefields
Date:2020 Jan 14
Mass (g):941.21
Weathering grade:A
Fayalite (mol%):33.2±0.3 (N=10)
Ferrosilite (mol%):27.0±0.6 (N=12)
Wollastonite (mol%):1.6±0.3 (N=12)
Magnetic suscept.:3.82
Classifier:J. L. MacArthur, K. L. Joy and R. H. Jones, UMan
Type spec mass (g):941.07
Type spec location:NHM London
Main mass:NHM London
Finder:Katherine Joy
Comments:Field ID:000131 BAS ID: Z19.5.5; 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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Public domain photographs:
Jane MacArthur      

     Recommended::   (81° 34' 45"S, 17° 28' 1"W)

     This is 1 of 43856 approved meteorites from Antarctica (plus 3802 unapproved names)
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