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Northwest Africa 15437
Basic information Name: Northwest Africa 15437
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15437
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 986 g
Classification
  history:
Recommended:  LL(L)3    [explanation]

This is 1 of 24 approved meteorites classified as LL(L)3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 29 Jan 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 15437 (NWA 15437)

(Northwest Africa)

Purchased: 3 Dec 2021

Classification: Ordinary chondrite (LL(L)3)

History: Purchased on 3 Dec 2021 by Chris Monk from Younes Chaoui.

Physical characteristics: Many individual stones with dark-brown fusion crust.

Petrography: (D. Sheikh, Cascadia) Unequilibrated ordinary chondrite composed of well-defined chondrules (Av. Diameter ~725±305 μm, n=28) set within a fine-grained matrix containing accessory Fe-Ni metal, troilite, and chromite.

Geochemistry: Olivine (Fa23.4±16.7, range Fa1.7-62.9, n=32), Low-Ca Pyroxene (Fs9.0±6.0Wo0.8±0.5, range Fs1.3-24.2Wo0.2-2.4, n=24).

Classification: Ordinary Chondrite LL(L)3.

Specimens: 23.07 g at Cascadia, main mass with Chris Monk.

Data from:
  MB112
  Table 0
  Line 0:
Place of purchase:Northwest Africa
Date:P 3 Dec 2021
Mass (g):986
Pieces:many
Class:LL(L)3
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):23.4±16.7
Ferrosilite (mol%):9.0±6.0
Wollastonite (mol%):0.8±0.5
Classifier:D. Sheikh, Cascadia
Type spec mass (g):23.07
Type spec location:Cascadia
Main mass:Chris Monk
Comments:CML 1569; 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. 112, in preparation (2023)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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