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Northwest Africa 14187
Basic information Name: Northwest Africa 14187
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14187
Observed fall: No
Year found: 2021
Country: Niger
Mass:help 548 g
Classification
  history:
Recommended:  LL6    [explanation]

This is 1 of 2817 approved meteorites (plus 1 unapproved name) 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 4 Sep 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14187 (NWA 14187)

Niger

Purchased: 2021 Jan

Classification: Ordinary chondrite (LL6)

History: Purchased by Mbark Arjdal in January 2021 from a dealer in Niger.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Largely recrystallized with rare chondrule remnants. Accessory phases are troilite, stained kamacite, sodic plagioclase, chromite and chlorapatite.

Geochemistry: Olivine (Fa31.1±0.4, range Fa30.6-31.5, N = 7), low-Ca pyroxene (Fs25.3±0.7Wo2.1±0.1, range Fs24.6-26.4Wo1.9-2.2, N = 6), augite (Fs10.2Wo43.6).

Classification: Ordinary chondrite (LL6).

Specimens: 20.2 g including one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Niger
Date:P 2021 Jan
Mass (g):548
Pieces:1
Class:LL6
Shock stage:S2
Weathering grade:W0/1
Fayalite (mol%):31.1±0.4
Ferrosilite (mol%):25.3±0.7
Wollastonite (mol%):2.1±0.1
Classifier:A. Irving, UWS, and J. Boesenberg, Brown U.
Type spec mass (g):20.2
Type spec location:UWB
Main mass:M. Arjdal
Comments:Work name Arj H23; 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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
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Geography:

Niger
Coordinates:Unknown.

Statistics:
     This is 1 of 77 approved meteorites from Niger (plus 3 unapproved names)

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