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Outer Recovery Icefields 18016
Basic information Name: Outer Recovery Icefields 18016
     This is an OFFICIAL meteorite name.
Abbreviation: OUT 18016
Observed fall: No
Year found: 2019
Country: Antarctica [Collected by the Lost Meteorites of Antarctica project, UK]
Mass:help 9.5 g
Classification
  history:
Recommended:  L3    [explanation]

This is 1 of 729 approved meteorites (plus 1 unapproved name) classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 6 May 2021
Writeuphelp
Writeup from MB 110:

Outer Recovery Icefields 18016 (OUT 18016)        81°29.28167’S, 18°01.55983’W

Antarctica, Antarctica

Find: 2019 Jan 11

Classification: Ordinary chondrite (L3)

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 1410 m.

Physical characteristics: Mass: 9.5 g. Pieces: 1. Dimensions: 3 cm × 2 cm × 2 cm. A round, part stone with 70% fusion crust and dark-brown interior.

Petrography: Abundant well-defined chondrules (up to 1 mm in diameter), chondrule fragments and mineral grains in a fine-grained matrix. Low abundance of metal and sulfide. Olivine and pyroxene compositions suggest that it is subtype 3.5 - 3.8.

Geochemistry: Mineral compositions and geochemistry: All analyses by EPMA. Olivine Fa21.8±6.2 (N=25), Pyroxene Fs9.5±6.1Wo0.7±0.5 (N=14).

Classification: Ordinary chondrite (L3) (Data suggests 3.5 - 3.8).

Specimens: 9.26 g type specimen (main mass) held at the NHM London.

Data from:
  MB110
  Table 0
  Line 0:
State/Prov/County:Antarctica
Origin or pseudonym:Outer Recovery Icefields
Date:2019 Jan 11
Latitude:81°29.28167'S
Longitude:18°01.55983'W
Mass (g):9.5
Pieces:1
Class:L3
Weathering grade:A/B
Fayalite (mol%):21.8±6.2 (N=25)
Ferrosilite (mol%):9.5±6.1 (N=14)
Wollastonite (mol%):0.7±0.5 (N=14)
Magnetic suscept.:4.72
Classifier:J. L. MacArthur, K. H. Joy and R. H. Jones, UMan
Type spec mass (g):9.26
Type spec location:NHM London
Main mass:NHM London
Finder:Katherine Joy
Comments:Field ID:000016 BAS ID: Z18.3.12; submitted by J. L. MacArthur, UMan
Institutions
   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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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Photos:
CreditPhotos
Public domain photographs:
Jane MacArthur      
Geography:

Antarctica
Coordinates:
     Recommended::   (81° 29' 17"S, 18° 1' 34"W)

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