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Northwest Africa 11473
Basic information Name: Northwest Africa 11473
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11473
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 230 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  LL(L)3
Recommended:  LL(L)3    [explanation]

This is 1 of 20 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 19 Oct 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11473 (NWA 11473)

(Northwest Africa)

Purchased: March 2017

Classification: Ordinary chondrite (LL(L)3)

History: Purchased from a Moroccan meteorite dealer in Quarzazate, Morocco.

Physical characteristics: Single stone, weathered exterior with many chondrules exposed. Saw cut reveals numerous densely packed chondrules in a brown-orange groundmass.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows may porphyritic chondrules, average apparent chondrule diameter 670±430 μm (n=18). Opaque, fine grained matrix present.

Geochemistry: (C. Agee and A. Santos, UNM) Olivine Fa14.5±8.0, Mn/Fe=53±36, Cr2O3=0.12±0.11 wt%, n=17; low Ca pyroxene Fs14.3±7.7Wo3.3±3.1, n=8.

Classification: Ordinary chondrite (LL(L)3), estimated subtype ~3.3.

Specimens: 24.2 g on deposit at UNM, Morten Bilet holds the main mass.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Ouarzazate, Morocco
Date:P March 2017
Mass (g):230
Pieces:1
Class:LL(L)3
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):14.5±8.0
Ferrosilite (mol%):14.3±7.7
Wollastonite (mol%):3.3±3.1
Classifier:C. Agee, UNM
Type spec mass (g):24.2
Type spec location:UNM
Main mass:Morten Bilet
Comments:Submitted by C. Agee
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)
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: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7005 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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