MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 13 Jun 2024
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 482
Basic information Name: Northwest Africa 482
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 482
Observed fall: No
Year found: 2000
Country: (Northwest Africa)
Mass:help 1015 g
NHM Catalogue:  5th Edition  (2000)  Lunar
Meteoritical Bulletin:  MB 85  (2001)  Lunar (impact melt breccia)
MetBase:  v. 7.1  (2006)  Lunar (anorth)
Recommended:  Lunar (anorth)    [explanation]

This is 1 of 83 approved meteorites classified as Lunar (anorth).   [show all]
Search for other: Lunar meteorites
Writeup from MB 85:

Northwest Africa 482


Found 2000?

Lunar meteorite (impact melt breccia)

A 1015 g stone was purchased on 2001 January 10 in Alnif, Morocco, by Michael Farmer.  The exact location of find is unknown but it is possibly in Algeria. The stone is complete, oriented, and appears relatively unweathered. Classification and mineralogy (A. Rubin and P. Warren, UCLA; D. Kring and I. Daubar, UAz): texture is typical of a crystalline impact melt breccia (polymict) with highland affinities; glassy and vesicular melt veins and melt pockets indicate shock subsequent to compaction by an impact event; plagioclase, An95.7Ab4.09Or0.17 (n = 136, UAz); olivine, Fo65–68 (average Fo66) with FeO/MnO = 88 ± 7 g/g (UCLA); olivine Fo68.4 with FeO/MnO =

93.9 ± 7.7 g/g (range: 78.7 to 111) (n = 51, UAz); pyroxene, Fs25Wo17 with nearly uniform Mg/(Mg + Fe) = 67–68 mol% and FeO/MnO = 51 ± 6 g/g (n = 10, UCLA); pyroxene, Wo10.3–51En32.6–63.9 Fs42.6–14.2, mean Mg/(Mg + Fe) = 68 mol%, FeO/MnO = 52 ± 8 g/g (n = 28, UAz); glassy melt veins occur in both UCLA and UAz samples; a 0.1 mm vein (UCLA) has SiO2 = 44.3 wt%, Na2O = 0.3 wt%, Al2O3 = 30.0 wt%, FeO = 3.6 wt%, MgO = 3.9 wt%, CaO = 17.3 wt%, and TiO2 = 0.3 wt%, which may approximate the bulk meteorite composition. Specimens: half of the main mass is with MFarmer; 74 g, DPitt; type specimens, 24 g, UCLA, and 18 g, UAz.

Data from:
  Table 4
  Line 132:
Origin or pseudonym:Algeria
Place of purchase:Alnif
Mass (g):1015
   and collections
UAz: Lunar and Planetary Laboratory, University of Arizona, 1629 E. University Blvd., Tucson, AZ 85721, United States (institutional address; updated 14 Jan 2012)
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
MFarmer: Michael Farmer, P.O. Box 86059, Tucson, AZ 85754-6059, United States; Website (private address)
References: Published in Meteoritical Bulletin, no. 85, MAPS 36, A293-A322 (2001)
Find references in NASA ADS:
Find references in Google Scholar:
Photos from the Encyclopedia of Meteorites:
Jim Strope         
Peter Marmet   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Alan Mazur   
Christopher Brandl   
Dave Johnson   
David Hardy   
Doug R   
Edward Krikorian   
Francois Pacaud   
Gerald Armstrong      
Jay Piatek   
Jim Strope   
MeteoriteCollector.org - FCOM - Russ Finney   
Michael S. Scherman   
Phil Schmitz   
Richard C Cavalieri   

     This is 1 of 9772 approved meteorites from (Northwest Africa) (plus 1862 unapproved names)

Direct link to this page