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Northwest Africa 14918
Basic information Name: Northwest Africa 14918
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14918
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 2.69 kg
Recommended:  H7    [explanation]

This is 1 of 29 approved meteorites classified as H7.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 20 Jun 2022
Writeup from MB 111:

Northwest Africa 14918 (NWA 14918)

(Northwest Africa)

Purchased: 2022 Apr

Classification: Ordinary chondrite (H7)

History: Purchased by Ziyao Wang in April 2022 from a dealer in Agadir, Morocco.

Petrography: A. Irving, UWS, and J. Boesenberg, BrownU) The specimen has a poikiloblastic texture (mean grainsize ~300 µm) with no preserved chondrule structures. Larger oikocrysts of low-Ca pyroxene enclose chadacrysts of olivine. Accessory phases include sodic plagioclase, stained kamacite, augite, troilite, chromite, and merrillite.

Geochemistry: Olivine (Fa18.3±0.3, range Fa17.9-18.7, N = 7), low-Ca pyroxene (Fs16.3±0.1Wo3.3±0.6, range Fs16.1-16.5Wo2.5-3.9, N = 5), augite (Fs7.5Wo42.4).

Classification: Ordinary chondrite (H7).

Specimens: 36.7 g including one polished thin section at UWB; remainder with WangZ.

Data from:
  Table 0
  Line 0:
Place of purchase:Agadir
Date:P 2022 Apr
Mass (g):2690
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):18.3±0.3
Ferrosilite (mol%):16.3±0.1
Wollastonite (mol%):3.3±0.6
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):36.7
Type spec location:UWB
Main mass:WangZ
Comments:Work name AH 702; submitted by A. Irving
   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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
WangZ: Ziyao Wang, Hebei GEO University North Campus, Huai An dong road 127, Shijiazhuang, Hebei Province , China (private address; updated 25 Jun 2021)
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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     This is 1 of 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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