Meteoritical Bulletin: Entry for Northwest Africa 13747

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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: 643 g

Classification
history:

Meteoritical Bulletin:	MB 110	(2022)	CK5
Recommended:			CK5 [explanation]

This is 1 of 217 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

help

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 (Fa_34.0±0.4, range Fa_33.3-35.2, NiO wt%=0.6±0.1, n=42), High-Ca Pyroxene (Fs_10.1±0.7Wo_46.3±0.5, range Fs_9.5-11.4Wo_45.6-46.9, 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:
  MB110
  Table 0
  Line 0:

Place of purchase:	Algeria
Date:	P 2020 Jul
Mass (g):	643
Pieces:	1
Class:	CK5
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
Finder:	anonymous
Comments:	Submitted by Daniel Sheikh

Institutions
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)

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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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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