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Northwest Africa 1241
Basic information Name: Northwest Africa 1241
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 1241
Observed fall: No
Year found: 2001
Country: (Northwest Africa)
Mass:help 282 g
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  Ureilite
Meteoritical Bulletin:  MB 86  (2002)  Ureilite
MetBase:  v. 7.1  (2006)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 584 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Writeuphelp
Writeup from MB 86:

Northwest Africa 1241

Libya

Found 2001 August 11

Achondrite (ureilite)

A single stone of 282 g was found by an anonymous finder in the Libyan desert. Classification and mineralogy (F. Wlotzka, MPI, and M. Kurz, Kurz): coarse olivine and pigeonite grains (up to 1 mm) are set in a pavement texture of smaller olivines containing finely dispersed metal grains. Coarser white reflecting grains are suessite, (Fe,Ni)3Si, with 13 wt% Si, 2.5 wt% Ni (range 1–4 wt%), and 1.1 wt% Cr. This mineral is abundant and occurs in blocky grains or interstial vein-like forms. No kamacite and no troilite were found. Olivine cores, Fa17–20 (0.7–1.7 wt% Cr2O3, 0.2–0.6 wt% CaO), rims are reduced to Fa1–10; pigeonite, Fs4–22Wo4–15En74–87, and 0.6–1.2 wt% Cr2O3. Carbonaceous matrix is rare, graphite occurs in fine-grained patches. The stone is, in contrast to North Haig, not brecciated. Weathering is minor, except for carbonate and oxide veins. Specimens: type specimen, 20.5 g, MPI; main mass is with the anonymous finder.

Data from:
  MB86
  Table 6
  Line 156:
Origin or pseudonym:Libya
Date:11 Aug 2001
Mass (g):282
Pieces:1
Class:Ureilite
Institutions
   and collections
Kurz: M. Kurz, Schillerstrasse 7, D-34626 Neukirchen, Germany (private address)
MPI: Max-Planck-Institut für Chemie, Abteilung Kosmochemie, Postfach 3060, D-55020 Mainz, Germany; Website (institutional address; updated 7 Nov 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 86, MAPS 37, A157-A184 (2002)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Meteorites Australia   
Geography: 
Coordinates:Unknown.

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

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