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Northwest Africa 4747
Basic information Name: Northwest Africa 4747
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4747
Observed fall: No
Year found: 2001
Country: Morocco
Mass:help 1200 g
Classification
  history:
Meteoritical Bulletin:  MB 92  (2007)  Mesosiderite
Recommended:  Mesosiderite    [explanation]

This is 1 of 194 approved meteorites classified as Mesosiderite.   [show all]
Search for other: Mesosiderites, Metal-rich meteorites
Comments: Approved 24 Jul 2007
Writeuphelp
Writeup from MB 92:

Northwest Africa 4747

Morocco

Find: 2001

Mesosiderite

History: Purchased in Alnif, Morocco, in 2001 by B. Fectay.

Physical characteristics: A single rounded stone of 1.2 kg with no fusion crust.

Petrography: (A. Yamaguchi, NIPR). The thin section reveals a breccia composed of silicate fragments (<1 mm) (~80 vol%) in a matrix of Fe, Ni-rich metal and minor troilite. There are a few large nodules of metallic Fe-Ni (<several mm). The silicate fragments are mainly pyroxene, plagioclase, and minor silica minerals.

Mineral compositions: (A. Yamaguchi, NIPR).Low-Ca pyroxene (Fs28.3-32.5Wo0.8-2.6; FeO/MnO = ~30) and plagioclase (An87.9-90.7).

Classification: Mesosiderite.

Type specimens: A total of 20.9 g of sample and one thin section is on deposit at NIPR. Fectay holds the main mass.

Data from:
  MB92
  Table 2
  Line 133:
Place of purchase:Erfoud, Morocco
Date:2001
Mass (g):1200
Pieces:1
Class:Meso
Type spec mass (g):20.9
Institutions
   and collections
NIPR: Antarctic Meteorite Research Center, National Institute of Polar Research, 10-3 Midori-cho, Tachikawa, Tokyo 190-8518, Japan; Website (institutional address; updated 9 Dec 2013)
Fectay: Bruno Fectay and Carine Bidaut, La Memoire de la Terre SARL, 39800 Aumont, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1466 approved meteorites from Morocco (plus 21 unapproved names) (plus 1 impact crater)

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