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Northwest Africa 13490
Basic information Name: Northwest Africa 13490
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13490
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 299 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 566 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 13490 (NWA 13490)

(Northwest Africa)

Purchased: 2019 Oct

Classification: Carbonaceous chondrite (CO3)

Petrography: (J. Gattacceca, CEREGE) Chondrite with small chondrules (average apparent diameter ~200 µm) and small CAIs set in abundant matrix (~30 vol%). Opaque minerals are metal, troilite and magnetite.

Geochemistry: Olivine Fa24.9±13.9, Fa PMD 49% (n=14). Cr2O3 in ferroan olivine 0.11±0.10 wt% (n=11). Low-Ca pyroxene Fs4.3±1.2Wo1.5±0.0 (n=3).

Classification: Carbonaceous chondrite (CO3). Estimated subtype 3.2-3.5 based on Fa PMD and Cr2O3 content of ferroan olivine.

Specimens: Type specimen at CEREGE. Main mass with Kuntz.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Zagora, Morocco
Date:P 2019 Oct
Mass (g):299.4
Pieces:1
Class:CO3
Weathering grade:high
Fayalite (mol%):24.9±13.9 (n=14)
Ferrosilite (mol%):4.3±1.2 (n=3)
Wollastonite (mol%):1.5±0.0
Magnetic suscept.:4.81
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):22
Type spec location:CEREGE
Main mass:Kuntz
Comments:work name K465; 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 7552 approved meteorites from (Northwest Africa) (plus 1969 unapproved names)

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