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Northwest Africa 12461
Basic information Name: Northwest Africa 12461
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12461
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 177 g
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  CO3
Recommended:  CO3    [explanation]

This is 1 of 653 approved meteorites (plus 2 unapproved names) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 16 Feb 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12461 (NWA 12461)

(Northwest Africa)

Purchased: 2018 March

Classification: Carbonaceous chondrite (CO3)

Petrography: Chondrite with well defined small chondrules (average apparent diameter ~200 μm) set in an abundant fine-grained iron rich matrix. FeNi metal is the main opaque mineral.

Geochemistry: Olivine Fa20.8±23.3, Fa PMD 102%, range Fa0.8-64.6 (n=8). Cr2O3 in ferroan olivine 0.08±0.03 wt% (n=9).Orthopyroxene Fs4.4±2.6Wo0.7±0.2 (n=2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.06.

Classification: Carbonaceous chondrite (CO3)

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

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Zagora (Morocco)
Date:P 2018 March
Mass (g):177
Pieces:1
Class:CO3
Weathering grade:high
Fayalite (mol%):20.8±23.3 (n=8)
Ferrosilite (mol%):4.4±2.6 (n=2)
Wollastonite (mol%):0.7±0.2
Magnetic suscept.:4.06
Classifier:J. Gattacceca, L. Krämer Ruggiu, CEREGE
Type spec mass (g):22.78
Type spec location:CEREGE
Main mass:Kuntz
Comments:work name K384; 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 Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Wojciech Moscinski   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9921 approved meteorites from (Northwest Africa) (plus 1838 unapproved names)

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