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Northwest Africa 11262
Basic information Name: Northwest Africa 11262
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11262
Observed fall: No
Year found: 2007
Country: Morocco
Mass:help 30 g
Meteoritical Bulletin:  MB 106  (2018)  Mesosiderite
Recommended:  Mesosiderite    [explanation]

This is 1 of 221 approved meteorites classified as Mesosiderite.   [show all]
Search for other: Mesosiderites, Metal-rich meteorites
Comments: Approved 31 May 2017
Writeup from MB 106:

Northwest Africa 11262 (NWA 11262)


Purchased: Mar 2007

Classification: Mesosiderite

History: A single stone of 30 g was purchased by Romano Serra at the Bologna Mineral Show in March 2007.

Physical characteristics: The main mass is partially covered by a black fusion crust.

Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi): The thin section analyzed displays a medium-grained texture consisting of orthopyroxene, calcic plagioclase, olivine, kamacite, taenite, ilmenite and chromite. Opaque phases constitute ~53 vol.% of the specimen

Geochemistry: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi) Orthopyroxene (Fs28.3±1.2Wo2.7, FeO/MnO = 24, N = 5), olivine (Fa14.8±0.9, FeO/MnO = 40, N = 3), plagioclase (An90.7Or0.5, N = 5).

Classification: Mesosiderite

Specimens: A total of 6.5 g specimen and one thin section is on deposit at MSN-Fi. OAM owns the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Bologna
Date:P Mar 2007
Mass (g):30
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):28.3±1.4 (n=12)
Wollastonite (mol%):2.8±0.4
Classifier:V. Moggi Cecchi, S. Caporali, G. Pratesi, MSN-FI
Type spec mass (g):6.5
Type spec location:MSN-FI
Main mass:OAM
Comments:Submitted by Vanni Moggi Cecchi
   and collections
OAM: Museo del Cielo e della Terra Vicolo Baciadonne 1 40017 San Giovanni in Persiceto ( BO) Italy Osservatorio Astronomico e Museo "Giorgio Abetti", San Giovanni Persiceto, Bologna, Italy; Website (institutional address; updated 31 Oct 2012)
MSN-FI: MUSEO DI STORIA NATURALE DELL'UNIVERSITA' DEGLI STUDI DI FIRENZE Via Giorgio La Pira, 4 – 50121 FIRENZE, Italy; Website (institutional address; updated 14 Jan 2015)
UniFi: Università degli Studi di Firenze, P.zza S. Marco, 4 - 50121 Firenze, Italy (institutional address; updated 14 Sep 2013)
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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     This is 1 of 1706 approved meteorites from Morocco (plus 26 unapproved names) (plus 1 impact crater)

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