header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 6 Oct 2021
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Northwest Africa 11438
Basic information Name: Northwest Africa 11438
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11438
Observed fall: No
Year found: 2007
Country: (Northwest Africa)
Mass:help 262 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  L6
Recommended:  L6    [explanation]

This is 1 of 11584 approved meteorites (plus 6 unapproved names) classified as L6.   [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 11438 (NWA 11438)

(Northwest Africa)

Purchased: 2007 June

Classification: Ordinary chondrite (L6)

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

Physical characteristics: Single stone of dark brown color with remnants of fusion crust.

Geochemistry: Mineral compositions and geochemistry: (K. Metzler, IfP) The mean olivine composition is Fa24.8±0.3 (24.4-25.1); n=13. The mean low-Ca pyroxene composition is Fs20.6±0.2 (20.1-20.9), Wo1.6±0.3 (1.2-2.2), n=13.

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

Data from:
  MB106
  Table 0
  Line 0:
Date:P 2007 June
Mass (g):262
Pieces:1
Class:L6
Shock stage:S1
Weathering grade:W3
Fayalite (mol%):24.8
Ferrosilite (mol%):20.6
Wollastonite (mol%):1.6
Classifier:K. Metzler, IfP
Type spec mass (g):20
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:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

Direct link to this page