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Northwest Africa 11442
Basic information Name: Northwest Africa 11442
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11442
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 202 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  L5/6
Recommended:  L5/6    [explanation]

This is 1 of 188 approved meteorites classified as L5/6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 11 Sep 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11442 (NWA 11442)

(Northwest Africa)

Purchased: 2005 Dec

Classification: Ordinary chondrite (L5/6)

History: Purchased from a Moroccan dealer at the mineral fair (CCH) in Hamburg, Germany

Geochemistry: Mineral compositions and geochemistry: (K. Metzler, IfP) The mean olivine composition is Fa25.2±0.4 (Fa24.5-25.8); n=10. The mean low-Ca pyroxene composition is Fs21.1±0.3Wo1.4±0.3 (Fs20.5-21.7Wo1.0-1.9), n=12.

Classification: L chondrite based on mineral chemistry. Petrologic type 5/6 based on the equilibrated state of olivine and pyroxene, the clear visibility of chondrule outlines and the large grain size of secondary plagioclase (>50 µm).

Data from:
  MB106
  Table 0
  Line 0:
Date:P 2005 Dec
Mass (g):202
Pieces:1
Class:L5/6
Shock stage:S3
Weathering grade:W1-2
Fayalite (mol%):25.2
Ferrosilite (mol%):21.1
Wollastonite (mol%):1.4
Classifier:K. Metzler, IfP
Type spec mass (g):21
Type spec location:IfP
Main mass:Anonymous
Comments:Submitted by K. Metzler, IfP
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
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 7354 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

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