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Outer Recovery Icefields 18020
Basic information Name: Outer Recovery Icefields 18020
     This is an OFFICIAL meteorite name.
Abbreviation: OUT 18020
Observed fall: No
Year found: 2019
Country: Antarctica [Collected by the Lost Meteorites of Antarctica project, UK]
Mass:help 4.52 g
Classification
  history:
Recommended:  H6    [explanation]

This is 1 of 6313 approved meteorites (plus 5 unapproved names) classified as H6.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 6 May 2021
Writeuphelp
Writeup from MB 110:

Outer Recovery Icefields 18020 (OUT 18020)        81°33.83817’S, 17°28.95283’W

Antarctica, Antarctica

Find: 2019 Jan 12

Classification: Ordinary chondrite (H6)

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 1552 m.

Physical characteristics: Mass: 4.52 g. Pieces: 1. Dimensions: 3 cm × 1.5 cm × 1 cm. An irregular, part stone with 50% black fusion crust and light gray interior.

Petrography: Poorly defined (up to 1 mm) chondrules, equilibrated texture. Metal and sulfide grains up to 1 mm.

Geochemistry: Mineral compositions and geochemistry: All analyses by EPMA. Olivine Fa20.0±1.2 (N=10), Pyroxene Fs17.3±0.8Wo1.3±0.3 (N=13).

Classification: Ordinary chondrite (H6).

Specimens: 3.85 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 12
Latitude:81°33.83817'S
Longitude:17°28.95283'W
Mass (g):4.52
Pieces:1
Class:H6
Weathering grade:B
Fayalite (mol%):20.0±1.2 (N=10)
Ferrosilite (mol%):17.3±0.8 (N=13)
Wollastonite (mol%):1.3±0.3 (N=13)
Magnetic suscept.:5.32
Classifier:J. L. MacArthur, K. H. Joy and R. H. Jones, UMan
Type spec mass (g):3.85
Type spec location:NHM London
Main mass:NHM London
Finder:Katherine Joy
Comments:Field ID:000020 BAS ID: Z18.4.1; 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° 33' 50"S, 17° 28' 57"W)

Statistics:
     This is 1 of 41899 approved meteorites from Antarctica (plus 3802 unapproved names)
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