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Northwest Africa 14380
Basic information Name: Northwest Africa 14380
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14380
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 570 g
Classification
  history:
Meteoritical Bulletin:  MB 110  (2022)  LL3.15
Recommended:  LL3.15    [explanation]

This is 1 of 19 approved meteorites classified as LL3.15.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 11 Dec 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14380 (NWA 14380)

(Northwest Africa)

Purchased: 2021 May

Classification: Ordinary chondrite (LL3.15)

History: Purchased by Shun-Chung Yang in May 2021 from a dealer in Tindouf, Algeria.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed, closely-packed, unequilibrated glass-bearing chondrules (apparent diameter 780 ± 420 µm, N = 24) are set in a fine grained matrix containing altered kamacite, taenite, troilite and a secondary iron oxide phase compositionally like Ti-poor magnetite.

Geochemistry: Olivine (Fa23.2±15.2, range Fa1.4-41.0, N = 6; Cr2O3 in ferroan olivine 0.02-0.69 wt.%, mean 0.16±0.18 wt%, N = 30), low-Ca pyroxene (Fs14.9±11.6Wo1.3±1.8, range Fs2.9-30.4Wo0.2-3.9, N = 4), augite (Fs9.0±0.6Wo40.9±3.0, range Fs8.5-9.4Wo38.8-43.0, N = 2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 3.74.

Classification: Ordinary chondrite (LL3.15). Subtype based on the mean and standard deviation for Cr2O3 contents in ferroan olivine (Grossman and Brearley, 2005).

Specimens: 22.3 g including one polished thin section at UWB; remainder with Mr. S.-C. Yang.

Bibliography:
  • Grossman J.N. and Brearley A.J. (2005) The onset of metamorphism in ordinary and carbonaceous chondrites. Meteorit. Planet. Sci. 40, 87-122. (link)
Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Tindouf
Date:P 2021 May
Mass (g):570
Pieces:3
Class:LL3.15
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):23.2±15.2
Ferrosilite (mol%):14.9±11.6
Wollastonite (mol%):1.3±1.8
Magnetic suscept.:3.74
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):22.3
Type spec location:UWB
Main mass:S.-C. Yang
Comments:Work name SCY-33; 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)
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)
Chunliang Zhang            
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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