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Northwest Africa 12574
Basic information Name: Northwest Africa 12574
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12574
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 1566 g
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  L5
Recommended:  L5    [explanation]

This is 1 of 8890 approved meteorites (plus 5 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 12 Apr 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12574 (NWA 12574)

(Northwest Africa)

Purchased: 2013

Classification: Ordinary chondrite (L5)

History: Reportedly found near Ait’ Hani in May 2012 by Mustapha Oulkouch, purchased by Dustin Dickens in September 2013 at Goulmima, Morocco, later purchased by Topher Spinnato on January 19, 2019.

Physical characteristics: Single stone, dark brown, desert weathered exterior; one side shows smoothed entry orientation. Saw-cut surfaces show numerous chondrules set in a dark brown to reddish-brown groundmass.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows mostly porphyritic chondrules set in a recrystallized groundmass; some chondrules are fragmental. Plagioclase grains are ubiquitous with sizes up to 25 μm in diameter. Pervasive Fe-oxide veinlets throughout.

Geochemistry: (C. Agee UNM) Olivine Fa23.9±0.4, Fe/Mn=49±2, n=23; low-Ca pyroxene Fs20.2±0.2Wo1.2±0.2, Fe/Mn=28±1, n=11.

Classification: Ordinary chondrite L5

Specimens: 23.75 g including a probe mount on deposit at UNM, Topher Spinnato holds the main mass.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2013
Mass (g):1565.6
Pieces:1
Class:L5
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):23.9±0.4
Ferrosilite (mol%):20.2±0.2
Wollastonite (mol%):1.2±0.2
Classifier:C. Agee, UNM
Type spec mass (g):23.75
Type spec location:UNM
Main mass:Topher Spinnato
Comments:fieldname TM1; submitted by C. Agee
Institutions
   and collections		 TM: Geoscience Museum, Transvaal Museum, P. O. Box 413, Pretoria 0001, South Africa (institutional address; updated 3 Mar 2011)
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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