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Northwest Africa 14448
Basic information Name: Northwest Africa 14448
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14448
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 1700 g
Classification
  history:
Recommended:  Howardite    [explanation]

This is 1 of 421 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 6 Aug 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14448 (NWA 14448)

(Northwest Africa)

Purchased: 2021 Jun

Classification: HED achondrite (Howardite)

History: Purchased by Craig Zlimen and Brett Cohen in June 2021 from an Algerian dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Complex polymict breccia containing a variety of lithic clasts with both diogenitic and eucritic mineral compositions, plus related mineral debris of (ranging widely in grainsize). Estimated proportions are ~60 vol.% diogenitic material and ~40 vol.% eucritic material; minor dark, fine grained carbonaceous chondrite clasts are also present. Accessory phases include silica polymorph, fayalite, ilmenite, low-Ti chromite and minor secondary calcite; no metal was observed.

Geochemistry: Diogenitic orthopyroxene (Fs19.2-26.0Wo1.4-4.1, FeO/MnO = 25-29, N = 3), eucritic low-Ca pyroxene hosts (Fs45.3-52.3Wo1.6-3.7, FeO/MnO = 29-30, N = 3), eucritic augite exsolution lamellae (Fs17.7-24.4Wo44.3-38.5, FeO/MnO = 25-28, N = 3), low-Ca pyroxene (Fs42.4Wo2.0, FeO/MnO = 31), pigeonite (Fs54.1Wo13.6, FeO/MnO = 31), augite (Fs31.7-33.7Wo43.6-37.9, FeO/MnO = 32-33, N = 2), diogenitic olivine (Fa 31.9-32.2, FeO/MnO = 39-42, N = 2), fayalite (Fa86.6, FeO/MnO = 39), plagioclase (An88.5-91.9Wo0.4-0.2, N = 4). Carbonaceous chondrite clast: olivine (Fa29.3±16.4, range Fa0.5-47.1, N = 7), low-Ca pyroxene (Fs2.5Wo3.8), subcalcic augite (Fs3.7Wo31.4).

Classification: Howardite.

Specimens: 24.6 g including one polished thin section at UWB; remainder with Mr. C. Zlimen and Mr. B. Cohen.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021 Jun
Mass (g):1700
Pieces:1
Class:Howardite
Shock stage:low
Weathering grade:low
Fayalite (mol%):31.9-32.2; 86.6
Ferrosilite (mol%):19.2-26.0; 31.7-33.7; 42.4; 54.1; 45.3-52.3; 17.7-
Wollastonite (mol%):1.4-4.1; 37.9-43.6; 2.0; 13.6; 1.6-3.7; 44.3-38.5
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):24.6
Type spec location:UWB
Main mass:C. Zlimen and B. Cohen
Comments:Work name CAZ049; 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. 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)
Robert Smart   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8636 approved meteorites from (Northwest Africa) (plus 1884 unapproved names)

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