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Northwest Africa 10633
Basic information Name: Northwest Africa 10633
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10633
Observed fall: No
Year found: 2015
Country: Morocco
Mass:help 42.5 g
Meteoritical Bulletin:  MB 105  (2016)  LL5-melt breccia
Recommended:  LL5-melt breccia    [explanation]

This is 1 of 5 approved meteorites classified as LL5-melt breccia.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 1 May 2016
Writeup from MB 105:

Northwest Africa 10633 (NWA 10633)


Purchased: Sep 2015

Classification: Ordinary chondrite (LL5, melt breccia)

History: Purchased by Hichame Mimaghador at the Erfoud Market in September 2015.

Physical characteristics: Single stone, dark brown crust. The sawn surface shows a gray matrix with gray-black portions and no evident chondrules.

Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi) The thin section displays a texture consisting of clasts with rare indistinct chondrules within a dark, very fine-grained black matrix. The matrix contains rounded troilite blebs and scattered grains of metal.

Geochemistry: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi) Olivine (Fa30.9±0.6, N=7), orthopyroxene (Fs25.4±0.6Wo2.1±0.2, N = 7). Analyses were done for both clasts and matrix.

Classification: Ordinary Chondrite (LL5-melt breccia); S5; W2

Specimens: A total of 8.6 g specimen and one thin section is on deposit at MSN-FI. Mimaghador holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P Sep 2015
Mass (g):42.5
Class:LL5-melt breccia
Shock stage:S5
Weathering grade:W2
Fayalite (mol%):30.9±0.6
Ferrosilite (mol%):25.4±0.6
Wollastonite (mol%):2.1±0.2
Classifier:V. Moggi Cecchi, S. Caporali, G. Pratesi, UniFi
Type spec mass (g):8.6
Type spec location:MSN-FI
Main mass:Mimaghador
Comments:Submitted by Vanni Moggi Cecchi
   and collections
MSN-FI: Museo di Storia Naturale “La Specola”, Sez. Mineralogia – Sistema Museale dell'Università degli Studi di Firenze Via Giorgio La Pira, 4 – 50121 Firenze, Italy; Website (institutional address; updated 24 Oct 2022)
UniFi: Università degli Studi di Firenze, P.zza S. Marco, 4 - 50121 Firenze, Italy (institutional address; updated 14 Sep 2013)
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Franco Vignato   


     This is 1 of 1929 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater)

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