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Northwest Africa 14274
Basic information Name: Northwest Africa 14274
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14274
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 220 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 594 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 6 Oct 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14274 (NWA 14274)

Northwest Africa

Purchased: 2017

Classification: Ureilite

History: Purchased in Agadir, Morocco by Aziz Habibi in 2017 and subsequently acquired by Ziyao Wang in June 2021.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Extensively recrystallized and partially melted assemblage dominated by olivine (>90 vol.%) together with pigeonite, orthopyroxene and accessory altered kamacite, graphite, secondary calcite and gypsum. Olivine grains consist of very fine grained polycrystalline mosaics but retain reduced magnesian rims; pyroxene grains are not mosaicized but show some patchy textural features consistent with partial melting. Glasses of diverse composition (including Si-rich, NaMgAlSi-rich and FeSi-rich) are present.

Geochemistry: Olivine (cores Fa15.2-22.2, N = 3; rims 12.0-13.0, N = 3), pigeonite (Fs5.0-14.2Wo5.6-10.6, N = 3), low-Ca pyroxene (Fs8.5-11.0Wo2.9-4.8, N = 3).

Classification: Ureilite (dunitic, shock-melted).

Specimens: 21.1 g including one polished thin section at UWB; remainder with WangZ.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Agadir
Date:P 2017
Mass (g):220
Pieces:1
Class:Ureilite
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):21.2-22.2; 12.0-15.2
Ferrosilite (mol%):14.2; 8.5-11.0
Wollastonite (mol%):9.2; 2.9-5.6
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):21.1
Type spec location:UWB
Main mass:WangZ
Comments:Work names WZY-58 and AH 1020; 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. 110, in preparation (2021)
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         
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8025 approved meteorites from (Northwest Africa) (plus 1951 unapproved names)

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