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Northwest Africa 11437
Basic information Name: Northwest Africa 11437
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11437
Observed fall: No
Year found: 2007
Country: (Northwest Africa)
Mass:help 1121 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  H4
Recommended:  H4    [explanation]

This is 1 of 6147 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 11 Sep 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11437 (NWA 11437)

(Northwest Africa)

Purchased: 2007 June

Classification: Ordinary chondrite (H4)

History: Purchased from a Moroccan dealer at the meteorite fair in Ensisheim, France

Physical characteristics: Single rounded stone of medium brown color without fusion crust. Partly covered by desert varnish.

Geochemistry: Mineral compositions and geochemistry: (K. Metzler, IfP) The mean olivine composition is Fa20.3±0.3 (Fa19.8-20.9); n=15. The mean low-Ca pyroxene composition is Fs14.3±4.9Wo0.6±0.2 (Fs4.0-17.6Wo0.2-0.9), n=13.

Classification: H chondrite based on olivine chemistry. Petrologic type 4 based on the equilibrated state of olivine and unequilibrated state of pyroxene.

Data from:
  MB106
  Table 0
  Line 0:
Date:P 2007 June
Mass (g):1121
Pieces:1
Class:H4
Shock stage:S1
Weathering grade:W2-3
Fayalite (mol%):20.3
Ferrosilite (mol%):14.3
Wollastonite (mol%):0.6
Classifier:K. Metzler, IfP
Type spec mass (g):21
Type spec location:IfP
Main mass:Anonymous
Comments:Some olivine grains with relictic Mg-rich cores occur.; 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.
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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