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Northwest Africa 13747
Basic information Name: Northwest Africa 13747
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13747
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 643 g
Recommended:  CK5    [explanation]

This is 1 of 199 approved meteorites classified as CK5.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 20 Mar 2021
Writeup from MB 110:

Northwest Africa 13747 (NWA 13747)

(Northwest Africa)

Purchased: 2020 Jul

Classification: Carbonaceous chondrite (CK5)

History: Pieces of different weights were purchased from a meteorite collector by Aziz Zad in the city of Ouargla, southeast Algeria, in July 2020.

Physical characteristics: Single stone with dark-brown fusion crust.

Petrography: (D. Sheikh, FSU) Specimen is composed of few chondrules (850±100 µm, n=5) set in a fine-grained matrix containing predominant ferroan olivine, secondary recrystallized feldspar (30±10 µm), Cr-rich magnetite, pentlandite, and pyrrhotite.

Geochemistry: Olivine (Fa34.0±0.4, range Fa33.3-35.2, NiO wt%=0.6±0.1, n=42), High-Ca Pyroxene (Fs10.1±0.7Wo46.3±0.5, range Fs9.5-11.4Wo45.6-46.9, n=9), Magnetite (Cr2O3 wt%=6.1±0.6, n=4).

Classification: Carbonaceous chondrite (CK5). Based on texture and mineral compositions sample is a CK chondrite. Secondary recrystallized plagioclase size indicates petrologic type 5.

Specimens: 20.2 g at UCLA, main mass with Aziz Zad.

Data from:
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2020 Jul
Mass (g):643
Shock stage:low
Weathering grade:low
Fayalite (mol%):34.0±0.4
Ferrosilite (mol%):10.1±0.7
Wollastonite (mol%):46.3±0.5
Classifier:D. Sheikh, FSU
Type spec mass (g):20.2
Type spec location:UCLA
Main mass:Aziz Zad
Comments:Submitted by Daniel Sheikh
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)
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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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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