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Northwest Africa 13372
Basic information Name: Northwest Africa 13372
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13372
Observed fall: No
Year found: 2019
Country: Morocco
Mass:help 7.25 kg
Recommended:  H3-6    [explanation]

This is 1 of 76 approved meteorites classified as H3-6.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 19 Jul 2020
Writeup from MB 109:

Northwest Africa 13372 (NWA 13372)


Purchased: 2019

Classification: Ordinary chondrite (H3-6)

History: Purchased by S.Crivello and I.Pardini at the 2019 Genoa Mineral Show from a Moroccan dealer. Reportedly from the Dakhla region.

Physical characteristics: Consists of four irregularly shaped masses, 2.45 kg, 3.15 kg, 1.136 kg and 518 g, found within meters of each other. All four masses are coated in red-brown desert varnish, at least in part. The largest mass also has light tan caliche and weathered fusion crust.

Petrography: (C. Herd, UAb) Optical and microprobe examination of a polished thin section shows well-defined chondrules with some brecciation. A single 5 mm equilibrated (type 6) clast was observed in the thin section. Iron oxide veins and iron oxide staining are present throughout. Shock effects include undulatory extinction with >2° angular variation.

Geochemistry: (C. Herd, UAb) Data obtained by EMP examination of carbon-coated thin section: Olivine Fa20.3±2.3 (n=87); Low-Ca Pyroxene Fs15.1±4.5Wo1.0±0.5 (n=61).

Classification: Ordinary chondrite, H3-6. Equilibrated clasts within a type 3 matrix. Matrix subtype between 3.7 and 3.9 based on standard deviation of olivine and low-Ca pyroxene analyses.

Specimens: Type specimen of 46.1 g, including one thin section, is at UAb. Main masses with S. Crivello and I. Pardini.

Data from:
  Table 0
  Line 0:
Place of purchase:Genoa
Date:P 2019
Mass (g):7254
Shock stage:S2
Weathering grade:W2.0
Fayalite (mol%):20.3± 2.3 (n=87)
Ferrosilite (mol%):15.1± 4.5 (n=61)
Wollastonite (mol%):1.0± 0.5 (n=61)
Classifier:C. Herd, UAb
Type spec mass (g):46.1
Type spec location:UAb
Main mass:S. Crivello
Comments:Submitted by C. Herd
   and collections
UAb: 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada, Canada; Website (institutional address; updated 17 Oct 2011)
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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     This is 1 of 1887 approved meteorites from Morocco (plus 26 unapproved names) (plus 1 impact crater)

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