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Northwest Africa 1950
Basic information Name: Northwest Africa 1950
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 1950
Observed fall: No
Year found: 2001
Country: (Northwest Africa)
Mass:help 812 g
Classification
  history:
Meteoritical Bulletin:  MB 88  (2004)  Martian (lherzolitic shergottite)
MetBase:  v. 7.1  (2006)  Shergottite-lherzolitic
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 153 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Writeuphelp
Writeup from MB 88:

Northwest Africa 1950

Morocco

Found 2001 January and March

Martian meteorite (lherzolitic shergottite)

Two stones (414 and 383 g) were found in the Atlas mountains (Morocco) in 2001 January and March. The exact location of find is unknown. The meteorite is a cumulate peridotitic rock consisting of olivine (~55 vol%), low and high-Ca pyroxenes (~35 vol%) and plagioclase glass (~8 vol%). Accessory minerals include phosphates (merrillite), chromite and spinels (inclusions in olivines and pyroxenes), sulfides (pyrrhotite), and a glass rich in potassium.The igneous texture is very similar to that of the ALHA77005. Classification and mineralogy (P. Gillet, ENSL,  J.A. Barrat, UAng, M. Bohn, Ifremer): pyroxenes are pigeonite, En78Fs19Wo2-En60Fs26Wo14, and augite, En53Fs16Wo31-En45Fs14Wo41; maskelynite ranges from An57Ab41Or1 to An40Ab57Or3. The key element weight-ratios FeO*/MnO is close to 30 for pigeonite and close to 50 for olivines. Geochemistry: REE pattern similar to that of ALHA77005 but with higher values. Specimens: type specimen, 20 g, ENSL; main mass, Fectay.

Data from:
  MB88
  Table 4
  Line 106:
Origin or pseudonym:Jules Verne
Date:Jan, Mar 2001
Mass (g):812
Pieces:2
Class:Martian
Classifier:Ph. Gillet, ENSL, J.-A. Barrat, UAng and M. Bohn (Ifremer)
Type spec mass (g):20
Type spec location:ENSL
Institutions
   and collections
ENSL: Ecole Normale Supérieure de Lyon, Laboratoire de Sciences de la Terre, 46 allée d'Italie 69364 Lyon Cedex, France (institutional address; updated 27 Feb 2011)
Fectay: Bruno Fectay and Carine Bidaut, La Memoire de la Terre SARL, 39800 Aumont, France; Website (private address)
Ifremer: Institut Français de recherché pour l’exploitation de la mer Brest, BP70, F-29280 Plouzané Cedex, France (institutional address)
UAng: Université d'Angers, Faculté des Sciences, 2 bd Lavoisier, 49045 Angers Cedex, France (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Bruno Fectay and Carine Bidaut            
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
David Hardy   
Gerald Armstrong   
Jim Strope   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 5759 approved meteorites from (Northwest Africa) (plus 2068 unapproved names)

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