header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 15 Apr 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 13464
Basic information Name: Northwest Africa 13464
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13464
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 446 g
Classification
  history:
Meteoritical Bulletin:  MB 109  (2020)  CO3
Recommended:  CO3    [explanation]

This is 1 of 645 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 11 Nov 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13464 (NWA 13464)

(Northwest Africa)

Purchased: June 2018

Classification: Carbonaceous chondrite (CO3)

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

Physical characteristics: Dark brownish rock without fusion crust.

Petrography: The meteorite shows a dark brownish interior and is predominantly composed of abundant chondrules (mean diameter about 200 μm), CAIs, and mineral fragments set into a fine-grained matrix. Chondrules are highly unequilibrated and sometimes surrounded by fine-grained dust rims. Some sulfides and FeNi metal are present in matrix and chondrules. Orange staining of chondrules and calcite filled cracks attest to severe terrestrial alteration.

Geochemistry: Cr2O3 in ferroan olivine 0.24±0.09 (n=7).

Classification: Carbonaceous chondrite (CO3). Estimated subtype CO3.1 according to Cr2O3 content of ferroan olivines which is between Rainbow (CO3.2) and Colony (CO3.0) as reported in Grossman and Brearley (2005).

Bibliography:
  • Grossman J.N. and Brearley A.J. (2005) The onset of metamorphism in ordinary and carbonaceous chondrites. Meteorit. Planet. Sci. 40, 87-122. (link)
Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P June 2018
Mass (g):446
Pieces:1
Class:CO3
Shock stage:S1
Weathering grade:W3
Fayalite (mol%):16.8±20.1 (1.2-57.4, n=18)
Ferrosilite (mol%):1.6±0.6 (1.1-3.3, n=14)
Wollastonite (mol%):1.1±0.2 (0.8-1.7, n=14)
Classifier:A. Greshake, MNB
Type spec mass (g):24.6
Type spec location:MNB
Main mass:jnmczurich
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. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
Crosslinks:
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