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Northwest Africa 1813
Basic information Name: Northwest Africa 1813
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 1813
Observed fall: No
Year found: 2002
Country: (Northwest Africa)
Mass:help 70 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 1813

Western Sahara

Found 2001/2002 winter

Achondrite (eucrite, polymict)

One stone of 70 g was found in Western Sahara. Mineralogy (C. Lorenz, Vernad): the polymict breccia consists of a number of mineral and rock fragments, embedded in a fine-grained clastic matrix. The lithic clasts are coarse- to medium-grained, poikilitic and poikilo-ophitic pyroxene-plagioclase rock clasts (~40 vol%), minor fine-grained granoblastic pyroxene-plagioclase rock clasts (~5 vol%), melt rocks and breccias. Mineral chemistry: pyroxene is En37.5Wo3.1 with lamellae of En30.5Wo42.2; feldspar is An88–92. Accessory phases are silica, chromite, ilmenite, troilite and Fe-metal. Specimens: one section and 14 g, Vernad; main mass with anonymous finder.

Data from:
  MB87
  Table 8
  Line 297:
Origin or pseudonym:Western Sahara
Date:winter 2001/2
Mass (g):70
Pieces:1
Class:Euc pm
Classifier:S. Afanasiev, Vernad, analyzed by N. Kononkova, Vernad
Type spec mass (g):14
Institutions
   and collections
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)
Catalogs:
References: Published in Meteoritical Bulletin, no. 87, MAPS 38, A189-A248 (2003)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Don Edwards   
Geography: 
Coordinates:Unknown.

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

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