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Northwest Africa 11004
Basic information Name: Northwest Africa 11004
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11004
Observed fall: No
Year found: 2013
Country: Morocco
Mass:help 408 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  L7
Recommended:  L7    [explanation]

This is 1 of 27 approved meteorites classified as L7.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 13 Jan 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11004 (NWA 11004)

Morocco

Purchased: 2013

Classification: Ordinary chondrite (L7)

History: Purchased by Ke Zuokai in 2013 from an anonymous Moroccan dealer.

Physical characteristics: An irregular stone with a partial fusion crust.

Petrography: Petrographic microscope examination of a thin section shows a granular texture with medium grain sizes (mostly 0.1–1.0 mm). It contains 55% olivine, 25% orthopyroxene, 5% augite, 5% plagiocase and 10% opaque minerals (Fe-sulfides, Fe-Ni metals and chromite).

Geochemistry: Olivine (Fa26.0-26.9, FeO/MnO=55.7-68.4, n=18), Plagioclase (An9.2-12.9Or1.6-4.2, n=15; average: An10.3±1.4Or2.6±0.8), augite (Fs7.0-11.4Wo34.5-45.0, FeO/MnO=23.0-30.8,n=11), orthopyroxene (Fs21.4-22.3Wo2.6-4.0, FeO/MnO=31.9-39.1,n=16)

Classification:

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2013
Mass (g):408
Pieces:1
Class:L7
Weathering grade:weak
Fayalite (mol%):26.5±0.3
Ferrosilite (mol%):21.9±0.2; 8.7±1.5
Wollastonite (mol%):3.3±0.4; 41.1±3.0
Classifier:Li Y., PMO
Type spec mass (g):28
Type spec location:PMO
Main mass:Ke Zuokai
Comments:Submitted by Hsu W.
Institutions
   and collections		 PMO: Purple Mountain Observatory, Nanjing, China (institutional address; updated 16 Dec 2011)
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.
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1556 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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