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Northwest Africa 13573
Basic information Name: Northwest Africa 13573
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13573
Observed fall: No
Year found: 2020
Country: Morocco
Mass:help 2.88 kg
Classification
  history:
Recommended:  CVox3    [explanation]

This is 1 of 5 approved meteorites classified as CVox3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 5 Dec 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13573 (NWA 13573)

Morocco

Purchased: 2020

Classification: CVox3

History: Many samples weighing a total of 2880 g were found by a nomad in northwest Africa. These meteorites were purchased by Carlos Muñecas and Adrián Contreras in Errachidia, from Hmad Ait Hssain.

Physical characteristics: Samples are dark in color, irregularly shaped, and have a partial coating of wind-ablated fusion crust. Chondrules and CAIs are visible on the cut face.

Petrography: Description and classification (A. Love, App): Chondrite composed of well-defined, dispersed chondrules (average apparent diameter of 696 µm, n=40) and CAIs set w/in an opaque fine-grained matrix. Chondrules contain sulfide and oxide droplets and platy ferroan olivine. Additional minerals are: Ni-sulfide, spinel, plagioclase and apatite.

Geochemistry: (A. Love, App) Olivine: Type I, Fa5.0±2.9 (Fa1.2-9.8, Fe/Mn=58.4±21.1, n=11); Type II, Fa23.0±14.7 (Fa10.1-36.8, Fe/Mn=121.6±36.0, n=4); low-Ca pyroxene, Fs1.8±1.6Wo1.3±1.2 (Fe/Mn=11.2±8.0, n=16); Ni content in sulfide is 12.9±11.1 wt% (n=14).

Classification: Carbonaceous chondrite (CV3). Based on textures, and mineral compositions sample is a CV3. Based on magnetic susceptibility and Ni compositions of FeS grains sample belongs to the Ox-Allende subgroup Gattacceca et al., 2020.

Specimens: Adrián Contreras and Carlos Muñecas (Expometeoritos) hold the 614 g main mass. A fragment weighing 20.3 g and polished thin section are on deposit at App.

Bibliography:
  • Gattacceca J.,Bonal L.,Sonzognia C., and Longereya J. (2020) CV chondrites: More than one parent body. Earth Planet. Sci. Letts. 547, 116467. (link)
Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Errachidia, Morocco
Date:P 2020
Mass (g):2880
Pieces:12
Class:CVox3
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):5.0±2.9; 23.0±14.7
Ferrosilite (mol%):1.8±1.6
Wollastonite (mol%):1.3±1.2
Magnetic suscept.:3.14
Classifier:A. Love, App
Type spec mass (g):20.3
Type spec location:App
Main mass:Carlos Muñecas (Expometeoritos)
Comments:Submitted by Anthony Love
Institutions
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1611 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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