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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
Meteoritical Bulletin:  MB 111  (2023)  H7
Recommended:  H7    [explanation]

This is 1 of 31 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, 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)
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 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 uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Ziyao Wang      

     This is 1 of 9559 approved meteorites from (Northwest Africa) (plus 1872 unapproved names)

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