MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 17 Oct 2021
Search for: Search type: Search limits: Display: Publication:
Text help
Starts with
Sounds like
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Northwest Africa 11188
Basic information Name: Northwest Africa 11188
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11188
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 58 g
Meteoritical Bulletin:  MB 106  (2018)  LL3
Recommended:  LL3    [explanation]

This is 1 of 371 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 8 Mar 2017
Writeup from MB 106:

Northwest Africa 11188 (NWA 11188)

(Northwest Africa)

Purchased: 2016 Sep

Classification: Ordinary chondrite (LL3)

History: Purchased by Fred Olsen in September 2016 from a Moroccan dealer at the Denver Show.

Petrography: (A. Irving and S. Kuehner, UWS) Closely-packed, well-formed chondrules (apparent diameter 500±400 µm) are set in a sparse, fine grained matrix containing iron hydroxides (after primary metal), troilite, calcite and rare anorthite. Both sodic plagioclase and glass are present as interstitial components of chondrules.

Geochemistry: Olivine (Fa0.5-48.7, Cr2O3 in ferroan examples 0.08-0.10 wt.%, N = 5), orthopyroxene (Fs4.4-39.4Wo0.3-3.0, N = 3), pigeonite (Fs19.8Wo16.0), augite (Fs6.2Wo46.6). Magnetic susceptibility log χ (× 10-9 m3/kg) = 3.31.

Classification: Ordinary chondrite (LL3).

Specimens: 11.67 g including one polished thin section at UWB; remainder with Olsen.

Data from:
  Table 0
  Line 0:
Place of purchase:Denver
Date:P 2016 Sep
Mass (g):58
Shock stage:S2
Weathering grade:W3
Fayalite (mol%):0.5-48.7
Ferrosilite (mol%):4.4-39.4
Wollastonite (mol%):0.3-3.0
Magnetic suscept.:3.31
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):11.67
Type spec location:UWB
Main mass:F. Olsen
Comments:work name FO16-2; submitted by A. Irving
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Olsen: Unknown person (private address; updated 17 Apr 2009)
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:

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

Direct link to this page