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Northwest Africa 14660
Basic information Name: Northwest Africa 14660
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14660
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 218 g
Classification
  history:
Recommended:  Achondrite-ung    [explanation]

This is 1 of 130 approved meteorites classified as Achondrite-ung.   [show all]
Search for other: Achondrites, Ungrouped achondrites
Comments: Approved 13 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14660 (NWA 14660)

(Northwest Africa)

Purchased: 2021 Jul

Classification: Ungrouped achondrite

History: Purchased by Ziyao Wang in July 2021 from a dealer in Agadir, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Protogranular texture (mean grainsize 0.4 mm). Composed predominantly of olivine (~50 vol.%) and orthopyroxene (~40 vol.%) together with accessory augite, taenite (with variable Fe/Ni ratios), kamacite (altered), troilite and low-Ti chromite, plus minor secondary Fe hydroxides and calcite. No plagioclase or phosphates were observed.

Geochemistry: Olivine (Fa30.5-30.9, FeO/MnO = 62-66, N = 4), orthopyroxene (Fs24.8-25.0Wo2.2-2.3, N = 3), augite (Fs9.8-9.9Wo44.4±0.0, N = 2).

Classification: Achondrite (ungrouped, ultramafic, brachinite-like). The specimen differs from true brachinites (like Brachina) in having orthopyroxene instead of augite as the dominant pyroxene phase. The absence of plagioclase precludes this specimen from being an LL7 chondrite.

Specimens: 22.2 g including one polished thin section at UWB; remainder with WangZ.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Agadir
Date:P 2021 Jul
Mass (g):218
Pieces:many
Class:Achondrite-ung
Shock stage:low
Weathering grade:low
Fayalite (mol%):30.5-30.9
Ferrosilite (mol%):24.8-25.0; 9.8-9.9
Wollastonite (mol%):2.2-2.3; 44.4±0.0
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):22.2
Type spec location:UWB
Main mass:WangZ
Comments:Work name WZY-60; 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)
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. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Ziyao Wang      
Public domain photographs:
A. Irving      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9042 approved meteorites from (Northwest Africa) (plus 1870 unapproved names)

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