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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:
Recommended:  H5    [explanation]

This is 1 of 11372 approved meteorites (plus 22 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 Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
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Geography:

Mauritania
Coordinates:Unknown.

Statistics:
     This is 1 of 212 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 impact craters)

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