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Northwest Africa 11542
Basic information Name: Northwest Africa 11542
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11542
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 75.1 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  CO3.0
Recommended:  CO3.0    [explanation]

This is 1 of 22 approved meteorites classified as CO3.0.   [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 11542 (NWA 11542)

(Northwest Africa)

Purchased: 2017

Classification: Carbonaceous chondrite (CO3.0)

Physical characteristics: Brownish fragments

Petrography: (J. Gattacceca, H. Pourkhorsandi, CEREGE) Small chondrules set in a fine-grained iron-rich matrix. Chondrules 60 vol%, matrix 40 vol% (point counting, N=156). Small CAI are present.

Geochemistry: Olivine Fa22.8±23.4, range 0.8-66.9, PMD 94% (N=18), Cr2O3 in ferroan olivine 0.30±0.12 wt% (N=9).

Classification: Carbonaceous chondrite (CO3.0). Cr2O3 content of ferroan olivine suggest a low petrographic subtype (similar to Colony).

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

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2017
Mass (g):75.1
Pieces:many
Class:CO3.0
Weathering grade:high
Magnetic suscept.:4.57
Classifier:J. Gattacceca, H. Pourkhorsandi, CEREGE
Type spec mass (g):15.11
Type spec location:CEREGE
Main mass:Kuntz
Comments:work name K347; 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:
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Geography: 
Coordinates:Unknown.

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

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