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Northwest Africa 13887
Basic information Name: Northwest Africa 13887
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13887
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 229 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 616 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 23 May 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13887 (NWA 13887)

(Northwest Africa)

Purchased: 2019 Oct

Classification: Carbonaceous chondrite (CO3)

Physical characteristics: A single dark stone broken in two fragments. Cut surface reveals a dark interior with small chondrules.

Petrography: (J. Gattacceca, CEREGE) Chondrite with small chondrules (average apparent diameter ~150 µm) and CAIs set in abundant fine-grained iron rich matrix (43 vol% by point counting, n=175 points). Opaque minerals are metal, troilite and magnetite.

Geochemistry: Olivine Fa17.6±11.8, range Fa1.8-40.8, Cr2O3 = 0.17±0.10 wt% (n=15). Low-Ca pyroxene Fs4.9±3.7Wo1.0±0.1 (n=5).

Classification: Carbonaceous chondrite (CO3)

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

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Zagora, Morocco
Date:P 2019 Oct
Mass (g):229.4
Pieces:1
Class:CO3
Weathering grade:high
Fayalite (mol%):17.6±11.8 (n=15)
Ferrosilite (mol%):4.9±3.7 (n=5)
Wollastonite (mol%):1.0±0.1
Magnetic suscept.:3.74
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):21
Type spec location:CEREGE
Main mass:Kuntz
Finder:anonymous
Comments:work name K464; 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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Photos:
CreditPhotos
Public domain photographs:
Jerome Gattacceca   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8745 approved meteorites from (Northwest Africa) (plus 1880 unapproved names)

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