MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 18 Nov 2023
Search for: Search type: Search limits: Display: Publication:
Text help
Starts with
Sounds like
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Northwest Africa 1877
Basic information Name: Northwest Africa 1877
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 1877
Observed fall: No
Year found: 2003
Country: (Northwest Africa)
Mass:help 312 g
Meteoritical Bulletin:  MB 88  (2004)  Diogenite-olivine
MetBase:  v. 7.1  (2006)  Diogenite-an
Recommended:  Diogenite-an    [explanation]

This is 1 of 9 approved meteorites classified as Diogenite-an.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Writeup from MB 88:

Northwest Africa 1877


Purchased 2003 June

Achondrite (Olivine-rich diogenite)

A partly crusted stony meteorite (312 g) was purchased in Zagora by a Moroccan dealer for A. and G. Hupé (xHupé) in 2003 June and more of the same material (622 g) was purchased in Tagounite in 2003 December. Classification and mineralogy (A. Irving and S. Kuehner, UWS): Coarse grained, dense and somewhat friable, with an overall yellow-green color.  Harzburgitic peridotite composed of subequal amounts of orthopyroxene (Fs22.4-23.3Wo1.5; FeO/MnO = 25.2-29.7) and olivine (Fa27.8, FeO/MnO = 44-50) with minor Al-poor chromite [Cr/(Cr+Al) = 84.8-88.0, Mg/(Mg+Fe) = 11.7-19.8], troilite (as abundant blebs within silicates and as inclusions in chromite), and sparse Ni-free metal (partly altered to limonite).  The modal amount of olivine estimated from three serial thin sections is approximately 45%, which is consistent with the moderately high density of this meteorite. The relatively magnesian silicate compositions are similar to those in Antarctic olivine diogenite GRA 98108, and quite different from those in another Moroccan olivine diogenite NWA 1459 (Irving et al., 2003).  Unlike both of these examples, however, NWA 1877 does not contain plagioclase.  Specimens: type specimen, 24 g and three polished thin sections, UWS; main mass, xHupé.

Data from:
  Table 4
  Line 44:
Date:Jun 2003
Mass (g):312
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
xHupé: (old address—now see GHupé or AHupé) G. and A. Hupe, 2616 Lake Youngs Court SE, Renton, WA 98058., United States (private address)
References: Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
Find references in NASA ADS:
Find references in Google Scholar:
Photos from the Encyclopedia of Meteorites:
Don Edwards   
Matteo Chinellato   
Shinishi Kato   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Achim Sven Faforke      
Aeroliths Collection Theodossiou         
Anthony James   
Argus Rocks   
Christophe PICQ   
Dave Johnson   
Don Cuarzo   
Edward Krikorian   
Gerald Armstrong                     
Matteo Chinellato   
Michael S. Scherman   
Rene Schmit   
Robert Zdancewicz   
stephen dunklee   
The Wilcox Collection of Meteorites         
Woreczko Jan & Wadi            

     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

Direct link to this page