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Northwest Africa 15517
Basic information Name: Northwest Africa 15517
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15517
Observed fall: No
Year found: 2015
Country: Morocco
Mass:help 4.6 g
Meteoritical Bulletin:  MB 112  (2024)  Eucrite-cm
Recommended:  Eucrite-cm    [explanation]

This is 1 of 55 approved meteorites classified as Eucrite-cm.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 29 Jan 2023
Writeup from MB 112:

Northwest Africa 15517 (NWA 15517)


Find: 2015

Classification: HED achondrite (Eucrite, cumulate)

History: This meteorite was purchased by Luc Labenne in Erfoud, Morocco, from an anonymous Moroccan dealer.

Petrography: (T. Shisseh, R. Hewins, B. Zanda, E. Jacquet, H. Chennaoui Aoudjehane, S. Pont, FSAC, MNHNP) This rock exhibits a cumulate texture, and predominately consists of pyroxene (>70 % vol) and plagioclase, with minor amount of chromite. Pyroxene is up to 5 mm in size, and contains rare augite lamellae up to 15 µm in width. Plagioclase is partly maskelynized, and contains vesicles up to 500 µm in diameter. In most cases, these maskelynized plagioclase areas are surrounded by radial cracks in pyroxene. Shock veins are observed, and consist of entrained fragments of pyroxene and schlieren of melted plagioclase in a groundmass of glass and devitrified glass. Chromite occurs between pyroxene and plagioclase boundaries, or as tiny inclusions in both phases.

Geochemistry: (T. Shisseh, R. Hewins, FSAC, MNHNP) Low-Ca pyroxene En59±1.4Fs36.5±1.5Wo4.5±2.9 (Fe/Mn=29±1; Mg# =62; n=4). Plagioclase An92±0.5Or0.10±0.1 (n=3). Chromite ~51 wt % Cr2O3.

Classification: (T. Shisseh, R. Hewins, FSAC, MNHNP) Cumulate eucrite.

Data from:
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Mass (g):4.6
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):36.5±1.5 (n=4)
Wollastonite (mol%):4.5±2.9
Classifier:T. Shisseh, FSAC; R. Hewins, B. Zanda, MNHNP
Type spec mass (g):0.92
Type spec location:MNHNP
Main mass:Luc Labenne meteorites
Comments:Submitted by T. Shisseh
   and collections
MNHNP: Museum National d'Histoire Naturelle, IMPMC-CP52, 57 rue Cuvier, 75005 Paris, France, France; Website (institutional address)
FSAC: Universite Hassan II Casablanca, Faculte des Sciences Ain Chock, Departement de Géologie, BP 5366 Maârif, Casablanca, Morocco (institutional address; updated 9 Jan 2013)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Cartier C., Consolmagno G., Goodrich C., Greshake A., Gross J., Joy K. H., Miao B. and Zhang B. (2024) The Meteoritical Bulletin, no. 112. Meteoritics & Planetary Science 59, 1820–1823. ?
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Public domain photographs:
Shisseh Taha      


     This is 1 of 2118 approved meteorites from Morocco (plus 32 unapproved names) (plus 1 impact crater)

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