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Northwest Africa 11092
Basic information Name: Northwest Africa 11092
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11092
Observed fall: No
Year found: 2016
Country: Morocco
Mass:help 12.7 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  CO3
Recommended:  CO3    [explanation]

This is 1 of 554 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 26 Feb 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11092 (NWA 11092)

Morocco

Purchased: 2016 May

Classification: Carbonaceous chondrite (CO3)

Physical characteristics: A partially crusted brownish stone. Cut surface reveals brownish interior.

Petrography: Chondrules and small CAIs set in fine-grained iron-rich matrix. Average apparent chondrule diameter 190±90 μm (N=56). Opaques are metal and troilite (and their weathering products), present as 50-100 μm blebs in the matrix and chondrules. Modal abundances: chondrules and fragments 56 vol%, matrix 37 vol%, opaque blebs 7 vol% (by point counting, N=135).

Geochemistry: Olivine Fa22.9±13.7, range Fa0.6-39.7, PMD=54%, FeO/MnO=93.8, N=17. Cr2O3 in ferroan olivine is 0.06±0.05 (N=14). Orthopyroxene Fs4.3Wo0.9 (N=1). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.44.

Classification: Carbonaceous chondrite (CO3). Moderate weathering.

Specimens: Type specimens at CEREGE and FSAC.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Casablanca, Morocco
Date:P 2016 May
Mass (g):12.7
Pieces:1
Class:CO3
Weathering grade:moderate
Fayalite (mol%):22.9±13.7 (N=17)
Ferrosilite (mol%):4.3 (N=1)
Wollastonite (mol%):0.9
Magnetic suscept.:4.44
Classifier:J. Gattacceca, P. Rochette, CEREGE
Type spec mass (g):2.6
Type spec location:CEREGE, FSAC
Main mass:private collection, Morocco
Comments:work name HC-C1; 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)
FSAC: Universite Hassan II Casablanca, Faculte des Sciences Ain Chock, Departement de Géologie, BP 5366 Maârif, Casablanca, Morocco (institutional address; updated 9 Jan 2013)
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.
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1503 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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