header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 3 Jun 2023
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 11922
Basic information Name: Northwest Africa 11922
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11922
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 138 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  L3-6
Recommended:  L3-6    [explanation]

This is 1 of 62 approved meteorites classified as L3-6.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 15 Sep 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11922 (NWA 11922)

(Northwest Africa)

Purchased: 2018

Classification: Ordinary chondrite (L3-6)

History: The meteorite was purchased from a local meteorite dealer in Erfoud, Morocco.

Physical characteristics: Two dark-grayish individuals partly covered with fusion crust.

Petrography: The meteorite is a chondritic breccia consisting of angular to subrounded L3 and L6 clasts set into type 3 clastic matrix. Plagioclase grain size in L6 clasts is about 60 µm. Chondrules are mostly flattened and well packed and have a mean diameter of about 0.6 mm.

Geochemistry: type 3 lithology: olivine: Fa14.9±9.3 (Fa2.5-26.9, n=20); pyroxene: Fs12.5±7.4Wo0.5±0.1 (Fs4.5-21.7Wo0.3-0.8, n=17); type 6 lithology: olivine: 25.2±0.3, n=11; pyroxene: Fs20.0±0.3Wo1.9±0.2, n=12

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2018
Mass (g):138
Pieces:2
Class:L3-6
Shock stage:S4
Weathering grade:W1
Fayalite (mol%):14.9; 25.2
Ferrosilite (mol%):12.5; 20.0
Wollastonite (mol%):0.5; 1.9
Magnetic suscept.:4.45
Classifier:A. Greshake, MNB
Type spec mass (g):24.6
Type spec location:MNB
Main mass:Hichame Mimaghador
Comments:Submitted by Ansgar Greshake
Institutions
   and collections		 MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

Direct link to this page