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Northwest Africa 11528
Basic information Name: Northwest Africa 11528
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11528
Observed fall: No
Year found: 2017
Country: Western Sahara
Mass:help 627 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  LL6
Recommended:  LL6    [explanation]

This is 1 of 2751 approved meteorites (plus 1 unapproved name) classified as LL6.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 21 Nov 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11528 (NWA 11528)

Western Sahara

Purchased: 2017

Classification: Ordinary chondrite (LL6)

History: Found in the region of Leagad, Western Sahara, near the Moroccan military wall in May 2017; purchased in June 2017.

Physical characteristics: Single stone; saw cut reveals faint chondrules set in a brown-orange groundmass.

Petrography: (C. Agee, UNM) Microprobe examination shows texturally equilibrated, recrystallized chondrules. Plagioclase grain size up to 200 μm in diameter.

Geochemistry: (C. Agee, UNM) Olivine Fa28.1±0.3, Fe/Mn=57±2, n=7; low-Ca pyroxene Fs23.1±0.1Wo3.5±0.4, Fe/Mn=33±1, n=6; plagioclase An20.1±6.2Ab74.8±4.4Or5.1±1.8, n=3.

Classification: Ordinary chondrite (LL6)

Specimens: 22.7 g on deposit at UNM, DPitt holds the main mass.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2017
Mass (g):627.1
Pieces:1
Class:LL6
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):28.1±0.3
Ferrosilite (mol%):23.1±0.1
Wollastonite (mol%):3.5±0.4
Classifier:C. Agee, UNM
Type spec mass (g):22.7
Type spec location:UNM
Main mass:Darryl Pitt
Comments:Field name MVCH297; 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 Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
Find references in NASA ADS:
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Geography:

Western Sahara
Coordinates:Unknown.

Statistics:
     This is 1 of 206 approved meteorites from Western Sahara (plus 20 unapproved names)

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