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Northwest Africa 14488
Basic information Name: Northwest Africa 14488
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14488
Observed fall: No
Year found: 2021
Country: Niger
Mass:help 41.1 kg
Classification
  history:
Recommended:  H5-melt breccia    [explanation]

This is 1 of 31 approved meteorites classified as H5-melt breccia.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 15 Dec 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14488 (NWA 14488)

Niger

Purchased: 2021 Jun

Classification: Ordinary chondrite (H5, melt breccia)

History: Purchased by Mark Lyon and others in June 2021 from a Moroccan dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Very fresh specimen consisting of rounded, somewhat shock-darkened lithic clasts enclosed within an ultrafine-grained quenched melt rock matrix containing entrained crystalline debris (~20 vol.%). The clasts consist of sparse small, well-formed equilibrated chondrules set in a fine grained recrystallized matrix containing unaltered kamacite, taenite, sodic plagioclase, low-Ti chromite, troilite, merrillite and chlorapatite.

Geochemistry: Olivine (Fa18.8±0.2, range Fa18.6-19.0, N = 5), low-Ca pyroxene (Fs16.4±0.1Wo1.4±0.1, range Fs16.2-16.5Wo1.3-1.5, N = 4), augite (Fs8.8±3.2Wo40.6±3.3, range Fs6.5-11.0Wo42.9-38.3, N = 2), plagioclase (Ab82.8An15.5Or1.7).

Classification: Ordinary chondrite (H5-melt breccia).

Specimens: 28.7 g including one polished thin section at UWB; remainder with Mr. M. Lyon (24 kg), Mr. C. Zlimen & Mr. Z. Zlimen (13.6 kg), Mr. J. Phillips & Mr. S. Phillips (3.5 kg).

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021 Jun
Mass (g):41100
Pieces:many
Class:H5-melt breccia
Weathering grade:W0
Fayalite (mol%):18.8±0.2
Ferrosilite (mol%):16.4±0.1
Wollastonite (mol%):1.4±0.1
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):28.7
Type spec location:UWB
Main mass:M. Lyon, C. Zlimen, Z. Zlimen, J. Phillips and S. Phillips
Comments:Work name CAZ046; 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. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Niger
Coordinates:Unknown.

Statistics:
     This is 1 of 94 approved meteorites from Niger (plus 3 unapproved names)

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