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Northwest Africa 3213
Basic information Name: Northwest Africa 3213
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 3213
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 147 g
Classification
  history:
Meteoritical Bulletin:  MB 91  (2007)  Mesosiderite
Recommended:  Mesosiderite    [explanation]

This is 1 of 181 approved meteorites classified as Mesosiderite.   [show all]
Search for other: Mesosiderites, Metal-rich meteorites
Comments: Approved 28 Mar 2007
Writeuphelp
Writeup from MB 91:

Northwest Africa 3213

Northwest Africa

Find: 2005

Mesosiderite

History: A complete stone was purchased in Erfoud by a Moroccan dealer for M. Chinellato.

Physical characteristics: The sample is a single stone of 147 g, partially covered with black fusion crust.
Petrography: (V. Moggi Cecchi and G. Pratesi, MSP) Fine-grained (<0.5 mm) matrix consisting of a relatively homogeneous assemblage of orthopyroxene (42%), plagioclase (18%), metal (20%), troilite (15%), chromite (5%), and accessory merrillite set in a unbrecciated texture. Metal grains are formed by taenite-kamacite aggregates.
Mineral compositions and geochemistry: Orthopyroxene is pigeonitic (Fs30.1En66.8Wo3.1; FeO/MnO = 26.2–29.8). Plagioclase is anorthitic (An92.1). Oxygen isotopes: (I. Franchi and R. Greenwood, OU) δ17O = 2.13, δ 18O = 4.55, Δ17O = −0.26 (all ‰).

Classification: Mesosiderite (B class); minimal shock, minimal weathering.

Type specimen: A total of 21.3 g of sample and one thin section are on deposit at MSP. MChin holds the main mass.

Data from:
  MB91
  Table 2
  Line 155:
Place of purchase:Erfoud, Morocco
Date:2005 May
Mass (g):147
Pieces:1
Class:Mes
Shock stage:minimal
Weathering grade:minimal
Ferrosilite (mol%):30.11
Classifier:V. Moggi Cecchi and G. Pratesi, MSP
Type spec mass (g):21.3
Type spec location:MSP
Main mass:MChin
Plots: O isotopes:  
Institutions
   and collections
MSP: Museo di Scienze Planetarie, Via Galcianese 20/H, 59100 Prato, Italy, Italy; Website (institutional address; updated 5 Mar 2014)
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
MChin: Matteo Chinellato, Via Triestina, 126/A-30030 Tessera, Venezia, Italy; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)
Find references in NASA ADS:
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Photos:   
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Don Edwards   
Matteo Chinellato   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6781 approved meteorites from (Northwest Africa) (plus 2061 unapproved names)

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