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Northwest Africa 13988
Basic information Name: Northwest Africa 13988
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13988
Observed fall: No
Year found: 2019
Country: Morocco
Mass:help 3.55 kg
Classification
  history:
Recommended:  H5    [explanation]

This is 1 of 10910 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 29 May 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13988 (NWA 13988)

Morocco

Purchased: 2019

Classification: Ordinary chondrite (H5)

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 a single irregularly shaped 3.45 kg mass that has a dark rd-brown, fractured exterior surface.

Petrography: (C. Herd, UAb) Optical and microprobe examination of a polished thin section shows well-delineated chondrules with some fractures and veins. Iron oxide veins and iron oxide staining are present throughout, and most metal is oxidized. Olivine has sharp extinction with <2° angular variation.

Geochemistry: (C. Herd, UAb) Data obtained by EMP examination of carbon-coated thin section: Olivine Fa18.5±0.4 (n=155); Low-Ca Pyroxene Fs16.4±0.6Wo1.3±0.4 (n=167).

Classification: Ordinary chondrite, H5.

Specimens: Type specimen consisting of 27.25 g and 35.81 g pieces, including one thin section, is at UAb. Main mass with S. Crivello and I. Pardini.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Genoa
Date:P 2019
Mass (g):3545
Pieces:1
Class:H5
Shock stage:S1
Weathering grade:W3.0
Fayalite (mol%):18.5±0.4 (n=155)
Ferrosilite (mol%):16.4±0.6 (n=167)
Wollastonite (mol%):1.3±0.4 (n=167)
Classifier:C. Herd, UAb
Type spec mass (g):63.0
Type spec location:UAb
Main mass:S. Crivello and I. Pardini
Comments:Submitted by C. Herd
Institutions
   and collections
UAb: 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada, Canada; Website (institutional address; updated 17 Oct 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1894 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater)

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