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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 586 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 Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
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Photos:
CreditPhotos
Public domain photographs:
Jerome Gattacceca   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7885 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

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