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Northwest Africa 13180
Basic information Name: Northwest Africa 13180
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13180
Observed fall: No
Year found: 2019
Country: Algeria
Mass:help 945 g
Classification
  history:
Recommended:  L4    [explanation]

This is 1 of 1717 approved meteorites (plus 4 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 9 Feb 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13180 (NWA 13180)

Algeria

Purchased: 2019 Jun

Classification: Ordinary chondrite (L4)

History: Purchased by Mbark Arjdal in June 2019 from an Algerian dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed chondrules are set in a recrystallized matrix containing altered kamacite, taenite, chromite and troilite.

Geochemistry: Olivine (Fa24.7±0.1, range Fa24.6-24.9, N = 7), low-Ca pyroxene (Fs20.8±0.2Wo1.6±0.2, range Fs20.6-21.0Wo1.4-1.9, N = 5), augite (Fs8.2±1.2Wo44.7±1.0, range Fs7.1-9.5Wo45.8-44.1, N = 3).

Classification: Ordinary chondrite (L4).

Specimens: 47.8 g including two polished thin sections at UWB; remainder with Mr. M. Arjdal.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2019 Jun
Mass (g):945
Pieces:2
Class:L4
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):24.7±0.1
Ferrosilite (mol%):20.8±0.2
Wollastonite (mol%):1.6±0.2
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):47.8
Type spec location:UWB
Main mass:M. Arjdal
Comments:Work names Arj ZM 76 and ZM 185; submitted by A. Irving
Institutions
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
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Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1110 approved meteorites from Algeria (plus 27 unapproved names) (plus 4 impact craters)

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