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Northwest Africa 1666
Basic information Name: Northwest Africa 1666
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 1666
Observed fall: No
Year found: 2002
Country: (Northwest Africa)
Mass:help 320 g
Classification
  history:
Meteoritical Bulletin:  MB 87  (2003)  Eucrite-pmict
MetBase:  v. 7.1  (2006)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 358 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Writeuphelp
Writeup from MB 87:

Northwest Africa 1666

Morocco

Purchased 2002 October

Achondrite (eucrite, polymict)

A complete fusion-crusted stone (320 g) was purchased from a Moroccan dealer by DGregory (DGregory). Classification and mineralogy (A. Irving and S. Kuehner, UWS): Angular mineral clasts consist of anorthitic plagioclase (An95Ab5), exsolved pigeonitic pyroxene, silica, ilmenite and troilite. The pyroxenes contain exsolution lamellae of clinopyroxene (FeO/ MnO = 34.8) within orthopyroxene (Wo4.2Fs56.9, FeO/MnO = 32.3–35.9). Polycrystalline clasts include various basaltic eucrites, cumulate eucrites and derivative fragments (containing anorthite with pyroxene or silica), a 2 cm quench-textured basaltic eucrite clast (containing larger, elongate grains of low-Ca pyroxene in a finer-grained matrix of pigeonite and anorthite), and an individual breccia clast. Specimens: type specimen, 20 g, and one polished thin section, UWS; main mass, ROM.

Data from:
  MB87
  Table 8
  Line 227:
Place of purchase:Denver
Date:P Oct 2002
Mass (g):320
Pieces:1
Class:Euc pm
Classifier:A. Irving, UWS
Type spec mass (g):20
Main mass:ROM
Institutions
   and collections
ROM: Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (institutional address; updated 18 Oct 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
DGregory: David Gregory, 230 First Avenue, Suite 108, St. Thomas, Ontario N5R 4P5, Canada (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 87, MAPS 38, A189-A248 (2003)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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