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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
Recommended:  LL6    [explanation]

This is 1 of 2892 approved meteorites (plus 2 unapproved names) 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
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:
  Table 0
  Line 0:
Place of purchase:Ouarzazate
Date:P 2021 Jun
Mass (g):1660
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:  
   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)
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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     This is 1 of 9368 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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