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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:
Meteoritical Bulletin:  MB 110  (2022)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 658 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
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 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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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 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names)
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Revision
  history:
  This lists important revisions made to data for this record.

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