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Northwest Africa 13690
Basic information Name: Northwest Africa 13690
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13690
Observed fall: No
Year found: 2019
Country: Morocco
Mass:help 4.6 kg
Classification
  history:
Recommended:  H5    [explanation]

This is 1 of 10909 approved meteorites (plus 20 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 30 Jan 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13690 (NWA 13690)

Morocco

Find: October 2019

Classification: Ordinary chondrite (H5)

History: Purchased in December 2019 by Juan Aviles Poblador from a meteorite dealer in Morocco. Later acquired in 2020 by D. Sheikh. Later acquired in 2021 by Andrey Jerochov.

Physical characteristics: Specimen displays a dark-brown fusion crust.

Petrography: (D. Sheikh, FSU) Specimen is an ordinary chondrite containing secondary recrystallized feldspar (Av. 20±5 µm), kamacite, taenite, chromite, Fe-oxides, and troilite. Only a few chondrules were observed (Av. 500±50 µm, n=8).

Geochemistry: Olivine (Fa18.7±0.4, range Fa18.2-19.8, n=28), Low-Ca Pyroxene (Fs16.4±0.3Wo1.1±0.1, range Fs16.0-16.9Wo1.0-1.4, n=13).

Classification: Ordinary chondrite (H5)

Specimens: 20.1 grams at UCLA, main mass with Andrey Jerochov.

Data from:
  MB110
  Table 0
  Line 0:
Date:October 2019
Mass (g):4600
Pieces:3
Class:H5
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):18.7±0.4
Ferrosilite (mol%):16.4±0.3
Wollastonite (mol%):1.1±0.1
Magnetic suscept.:5.15
Classifier:D. Sheikh, FSU
Type spec mass (g):20.1
Type spec location:UCLA
Main mass:Andrey Jerochov
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 Meteoritical Bulletin, no. 110, in preparation (2021)
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1887 approved meteorites from Morocco (plus 26 unapproved names) (plus 1 impact crater)

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