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Northwest Africa 11584
Basic information Name: Northwest Africa 11584
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11584
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 56.97 kg
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  L5
Recommended:  L5    [explanation]

This is 1 of 8298 approved meteorites (plus 4 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 16 Jan 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11584 (NWA 11584)

(Northwest Africa)

Purchased: 2017

Classification: Ordinary chondrite (L5)

History: Purchased from a Moroccan meteorite dealer in Tucson, 2017. Reportedly found in Morocco in 2016.

Physical characteristics: Single stone, broken surface shows numerous well defined chondrules, some oxidation present, desert caliche on exterior.

Petrography: (C. Agee, UNM) Microprobe examination shows distinct chondrules throughout, plagioclase grain size is ~20 μm, a significant portion of the matrix appears to be recrystallized. Kamacite, troilite, and oxidized iron are ubiquitous.

Geochemistry: (C. Agee, UNM) Olivine Fa24.8±1.2, Fe/Mn=48±7, n=11; low-Ca pyroxene Fs21.5±0.5Wo1.8±0.2, Fe/Mn=29±1, n=6.

Classification: Ordinary chondrite (L5)

Specimens: 20.5 g on deposit at UNM, DPitt holds the main mass.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2017
Mass (g):56970
Pieces:1
Class:L5
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):24.8±1.2
Ferrosilite (mol%):21.5±0.5
Wollastonite (mol%):1.8±0.2
Classifier:C. Agee, UNM
Type spec mass (g):20.5
Type spec location:UNM
Main mass:DPitt
Comments:Field name MVCH314; submitted by C. Agee, UNM
Institutions
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8559 approved meteorites from (Northwest Africa) (plus 1896 unapproved names)

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