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Northwest Africa 14563
Basic information Name: Northwest Africa 14563
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14563
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 1780 g
Classification
  history:
Recommended:  Howardite    [explanation]

This is 1 of 417 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 25 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14563 (NWA 14563)

(Northwest Africa)

Purchased: 2021 Jul

Classification: HED achondrite (Howardite)

History: Purchased by Philip Mani in July 2021 from a dealer in Zagora, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Highly shocked and partially melted breccia composed of lithic clasts and related crystalline debris plus orthopyroxene of diogenitic composition (~30 vol.%, exhibiting undulose extinction). Lithic clasts have fine grained, intergranular textures and are composed of exsolved pigeonite (highly recrystallized to very fine grained mosaics) and anorthite (variously polycrystalline, spherulitic but birefringent, or transformed to isotropic maskelynite) together with accessory silica polymorph, ilmenite, low-Ti chromite and altered Fe metal. Some fine grained melt veins with fluidal textures and incorporated crystalline debris are present, as well as patches and vesicle fillings of secondary calcite.

Geochemistry: Diogenitic orthopyroxene (Fs34.2-35.5Wo2.1-2.5, FeO/MnO = 31-36, N = 2), low-Ca pyroxene hosts (Fs42.8-45.5Wo4.3-7.3, FeO/MnO = 28-29, N = 2), augite exsolution lamellae (Fs17.8-23.2Wo38.9-45.1, FeO/MnO = 23-26, N = 2), ferroan low-Ca pyroxene (Fs53.3Wo3.8, FeO/MnO = 32), pigeonite (39.0-40.9Wo9.1-10.2, FeO/MnO = 31-33, N = 2), augite inclusion in plagioclase (Fs13.0Wo45.0, FeO/MnO = 27), anorthite (An90.4-93.4Or0.3, N = 3).

Classification: Howardite (highly shocked).

Specimens: 34.7 g including one polished thin section at UWB; remainder with Mr. P. Mani.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2021 Jul
Mass (g):1780
Pieces:1
Class:Howardite
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):34.2-35.5; 42.8-45.5; 17.8-23.2
Wollastonite (mol%):2.1-2.5; 4.3-7.3; 38.9-45.1
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):34.7
Type spec location:UWB
Main mass:P. Mani
Comments:Work names RC143.1, PCM21-4; 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:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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