header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 26 Mar 2024
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 11540
Basic information Name: Northwest Africa 11540
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11540
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 276 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  CO3
Recommended:  CO3    [explanation]

This is 1 of 643 approved meteorites (plus 1 unapproved name) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 26 Dec 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11540 (NWA 11540)

(Northwest Africa)

Purchased: 2017

Classification: Carbonaceous chondrite (CO3)

Physical characteristics: Brownish fragments

Petrography: (J. Gattacceca, H. Pourkhorsandi, CEREGE) Small chondrules set in a fine-grained iron-rich matrix. Chondrules 50 vol%, matrix 50 vol% (point counting, N=136). Small CAI are present.

Geochemistry: Olivine Fa13.7±18.5, range 0.7-48.4, PMD 101% (N=13), Cr2O3 in ferroan olivine 0.08±0.05 wt% (N=9). Orthopyroxene Fs1.4±0.3Wo1.9±1.2 (N=4).

Classification: Carbonaceous chondrite (CO3)

Specimens: Type specimen at CEREGE. Main mass with Kuntz and PM. Pelé.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2017
Mass (g):276.3
Pieces:many
Class:CO3
Weathering grade:moderate
Magnetic suscept.:3.87
Classifier:J. Gattacceca, H. Pourkhorsandi, CEREGE
Type spec mass (g):20.60
Type spec location:CEREGE
Main mass:Kuntz + PM. Pelé
Comments:work name K343; submitted by Jérôme Gattacceca
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 10 Jun 2023)
Kuntz: Fabien Kuntz, France; Website (private address)
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:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Ryan Upchurch   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names)
Also see:
  This lists the most popular meteorites among people who looked up this meteorite.
Revision
  history:
  This lists important revisions made to data for this record.

Direct link to this page