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Northwest Africa 4017
Basic information Name: Northwest Africa 4017
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4017
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 217 g
Classification
  history:
Meteoritical Bulletin:  MB 90  (2006)  Mesosiderite
Recommended:  Mesosiderite    [explanation]

This is 1 of 273 approved meteorites classified as Mesosiderite.   [show all]
Search for other: Mesosiderites, Metal-rich meteorites
Comments: Approved 3 Feb 2006
Writeuphelp
Writeup from MB 90:

Northwest Africa 4017

Northwest Africa

Find: 2005

Mesosiderite

History: An anonymous finder recovered a single stone of 216.9 g in 2005 from the western part of the Sahara in Morocco.

Petrography: (A. Greshake, MNB) A stony portion consists of dominant low-Ca pyroxene, plagioclase, and phosphates. Minor phases include silica, troilite, and small Fe,Ni metal grains. Pyroxene grains often contain numerous small Fe,Ni metal, troilite, and silica inclusions.

Geochemistry: Pyroxene, Fs25.5–40.8; plagioclase, An92.4 (total range An90.5–93.7). The metal is mostly kamacite.

Classification: Achondrite (mesosiderite) with low degree of shock and low to moderate degree of weathering.

Specimens: A 23.4 g type specimen and one polished thin section are on deposit at MNB. HSSH-Pirmasens of Germany holds the main mass.

Data from:
  MB90
  Table 2
  Line 239:
Place of purchase:Morocco
Date:2005
Mass (g):216.9
Pieces:1
Class:Mes
Shock stage:Low
Weathering grade:minimal-moderate
Type spec mass (g):23.4
Institutions
   and collections		 MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)
Also see:
  This lists the most popular meteorites among people who looked up this meteorite.
Revision
  history:
  This lists important revisions made to data for this record.

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