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Northwest Africa 15434
Basic information Name: Northwest Africa 15434
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15434
Observed fall: No
Year found: 2021
Country: Mauritania
Mass:help 727 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  H5
Recommended:  H5    [explanation]

This is 1 of 11988 approved meteorites (plus 23 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 12 Nov 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15434 (NWA 15434)

Mauritania

Find: 2021

Classification: Ordinary chondrite (H5)

History: Found in Mauritania in 2021; Purchased on 2021 Aug 9 by Chris Monk from Younes Chaoui.

Physical characteristics: Four stones (251.2, 233.7, 141.1, and 101 g) with dark brown fusion crust.

Petrography: (D. Sheikh, Cascadia) Equilibrated ordinary chondrite containing accessory Fe-Ni metal, troilite, and chromite.

Geochemistry: Olivine (Fa18.0±0.6, range Fa17.5-19.6, n=11), Low-Ca Pyroxene (Fs16.3±0.8Wo1.1±0.2, range Fs15.2-19.0Wo0.9-1.7, n=31).

Classification: Ordinary Chondrite (H5).

Specimens: 23.6 g at Cascadia, main mass with Chris Monk.

Data from:
  MB111
  Table 0
  Line 0:
Date:2021
Mass (g):727
Pieces:4
Class:H5
Shock stage:S2
Weathering grade:W3
Fayalite (mol%):18.0±0.6
Ferrosilite (mol%):16.3±0.8
Wollastonite (mol%):1.1±0.2
Classifier:D. Sheikh, Cascadia
Type spec mass (g):23.6
Type spec location:Cascadia
Main mass:Chris Monk
Comments:CML 1575; submitted by Daniel Sheikh
Institutions
   and collections
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
Catalogs:
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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Geography:

Mauritania
Coordinates:Unknown.

Statistics:
     This is 1 of 227 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 impact craters)

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