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Northwest Africa 14745
Basic information Name: Northwest Africa 14745
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14745
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 568 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  LL3
Recommended:  LL3    [explanation]

This is 1 of 477 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 1 Oct 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14745 (NWA 14745)

(Northwest Africa)

Purchased: 2021 Sep

Classification: Ordinary chondrite (LL3)

History: Purchased by Omar Bourki in September 2021 from a dealer in Boujdour, Morocco.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed chondrules (apparent diameter 830±360 µm, N = 25; some ellipsoidal) containing devitrified glass are set in a fine grained matrix containing troilite, extensively altered kamacite, chromite, pentlandite and minor secondary barite.

Geochemistry: Olivine (Fa222.5±10.3, range Fa11.3-38.4, N = 5; Cr2O3 in ferroan olvine 0.05-0.15 wt.%, mean 0.08±0.04 wt.%, N = 5), low-Ca pyroxene (Fs17.2±12.5Wo1.3±1.3, range Fs4.2-32.2Wo0.2-3.3, N = 5), diopside (Fs2.7Wo42.7). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.29.

Classification: Ordinary chondrite, LL3. LL group based on magnetic susceptibility and chondrule size.

Specimens: 20.1 g including one polished thin section at UWB; remainder with Mr. O. Bourki.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Boujdour, Morocco
Date:P 2021 Sep
Mass (g):568
Pieces:1
Class:LL3
Shock stage:S2
Weathering grade:W2/3
Fayalite (mol%):22.5±10.3 (n=5)
Ferrosilite (mol%):17.2±12.5
Wollastonite (mol%):1.3±1.3
Magnetic suscept.:4.29
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):20.1
Type spec location:UWB
Main mass:O. Bourki
Comments:Work name OB21-1; 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)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
BrownU: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 4 Jan 2024)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Photos:
CreditPhotos
Public domain photographs:
A. Irving      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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