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Northwest Africa 14180
Basic information Name: Northwest Africa 14180
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14180
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 1660 g
Classification
  history:
Recommended:  LL6    [explanation]

This is 1 of 2843 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 6 Oct 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14180 (NWA 14180)

(Northwest Africa)

Purchased: 2021 Jun

Classification: Ordinary chondrite (LL6)

History: Purchased by Ziyao Wang in June 2021 from a dealer in Ouarzazate, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Highly recrystallized with triple grain junction and poikiloblastic textures (mean grainsize ~70 µm). Three possible but indistinct remnant chondrules were observed in a large area thin section. Composed predominantly of olivine and low-Ca pyroxene with accessory augite, sodic plagioclase, low-Ti chromite, troilite, pentlandite and taenite.

Geochemistry: Olivine (Fa31.7±1.1, range Fa31.1-33.3, N = 4), low-Ca pyroxene (Fs25.5±0.2Wo2.0±0.2, range Fs25.2-25.7Wo1.9-2.2, N = 4), augite (Fs10.6±0.2Wo43.6±0.2, range Fs10.3-10.8Wo43.4-43.8, N = 4), plagioclase (Ab83.2An10.7Or6.1). Oxygen isotopes (K. Ziegler, UNM): analyses of acid-washed subsamples by laser fluorination gave, respectively, δ17O 3.899, 4.036, 3.953; δ18O 5.064, 5.402, 5.205; Δ17O 1.226, 1.183, 1.205 (all data linearized).

Classification: Ordinary chondrite (LL6).

Specimens: 28.9 g including one polished thin section at UWB; remainder with WangZ.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Ouarzazate
Date:P 2021 Jun
Mass (g):1660
Pieces:many
Class:LL6
Shock stage:low
Weathering grade:low
Fayalite (mol%):31.7±1.1
Ferrosilite (mol%):25.5±0.2
Wollastonite (mol%):2.0±0.2
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):28.9
Type spec location:UWB
Main mass:WangZ
Comments:Work names WZY-49 and AB 89; submitted by A. Irving
Plots: O isotopes:  
Institutions
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
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)
WangZ: Ziyao Wang, Hebei GEO University North Campus, Huai An dong road 127, Shijiazhuang, Hebei Province , China (private address; updated 25 Jun 2021)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8138 approved meteorites from (Northwest Africa) (plus 1941 unapproved names)

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