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Northwest Africa 14053
Basic information Name: Northwest Africa 14053
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14053
Observed fall: No
Year found: 2020
Country: Morocco
Mass:help 6.18 kg
Recommended:  H6    [explanation]

This is 1 of 6416 approved meteorites (plus 5 unapproved names) classified as H6.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 21 Jun 2021
Writeup from MB 110:

Northwest Africa 14053 (NWA 14053)


Purchased: January 2020

Classification: Ordinary chondrite (H6)

History: Purchased from a Moroccan dealer at the Tucson show

Physical characteristics: (R. Szczuczko) A large blocky stone with 2 distinct exterior characteristics; one surface has a thick dark brown smooth fusion crust with regmaglypts and deep weathered fractures, while the other surfaces are relatively fresh with shallow brown fusion crust. The interior is a mottled brown with light-gray patches and reveals occasional chondrules and very abundant heterogeneously distributed flecks of metal.

Petrography: (C. Herd, UAb) Optical examination of a polished thin section shows poorly defined chondrules and a brecciated texture crosscut by shock veins. Minor iron staining is present. Olivine has weak mosacism and planar fractures.

Geochemistry: (C. Herd and A. Locock, UAb, K. Domanik, UAz, R. Szczuzko) Data obtained by EMP examination of carbon-coated probe mount: Olivine Fa19.2±0.7 (n=49); Low-Ca Pyroxene Fs19.9±1.0Wo1.6±0.4 (n=65).

Classification: Ordinary chondrite, H6 monomict breccia

Specimens: Type specimen of 27.2 g is at UAb. Main mass, polished mount and thin section with the owner.

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P January 2020
Mass (g):6182
Shock stage:S4
Weathering grade:W1.0
Fayalite (mol%):19.2±0.7 (n=49)
Ferrosilite (mol%):16.9±1.0 (n=65)
Wollastonite (mol%):1.6±0.4 (n=65)
Classifier:C. Herd, UAb, and R. Szczuzko
Type spec mass (g):27.2
Type spec location:UAb
Main mass:R. Szczuczko
Comments:Field number 3Z-6.2; submitted by C. Herd
   and collections
UAz: Lunar and Planetary Laboratory, University of Arizona, 1629 E. University Blvd., Tucson, AZ 85721, United States (institutional address; updated 14 Jan 2012)
UAb: 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada, Canada; Website (institutional address; updated 17 Oct 2011)
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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     This is 1 of 1894 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater)

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