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Northwest Africa 13491
Basic information Name: Northwest Africa 13491
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13491
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 144.5 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 569 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 14 Nov 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13491 (NWA 13491)

(Northwest Africa)

Purchased: 2019 Oct

Classification: Carbonaceous chondrite (CO3)

History: Bought from a dealer from northwest Africa.

Petrography: (J. Gattacceca, CEREGE) Chondrite with small chondrules (average apparent diameter 180±80 µm, n=21) and small CAIs set in abundant matrix (38vol% by point counting, n=105). Opaque minerals are metal, troilite and magnetite.

Geochemistry: Olivine Fa20.2±13.7, Fa PMD 61% (n=8). Cr2O3 in ferroan olivine 0.16±0.07 wt% (n=7). Low-Ca pyroxene Fs134Wo4.9 (n=1).

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Munich, Germany
Date:P 2019 Oct
Mass (g):144.5
Pieces:1
Class:CO3
Weathering grade:moderate
Fayalite (mol%):20.2±13.7 (n=8)
Ferrosilite (mol%):1.4 (n=1)
Wollastonite (mol%):4.9
Magnetic suscept.:4.42
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):26.9
Type spec location:CEREGE
Main mass:Kuntz
Comments:work name K471; 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 29 Oct 2018)
Kuntz: Fabien Kuntz, France; Website (private address)
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 7688 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

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