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Northwest Africa 4482
Basic information Name: Northwest Africa 4482
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4482
Observed fall: No
Year found: 2006
Country: Algeria
Mass:help 5.81 kg
Meteoritical Bulletin:  MB 92  (2007)  Pallasite-Main gr
Recommended:  Pallasite, PMG    [explanation]

This is 1 of 44 approved meteorites (plus 1 unapproved name) classified as Pallasite, PMG.   [show all]
Search for other: Main group pallasites, Metal-rich meteorites, and Pallasites
Comments: Approved 24 Jul 2007
Revised 26 May 2009: Revised pallasite classifications
Writeup from MB 92:

Northwest Africa 4482


Find: August 2006

Pallasite (main group)

History: G. Hupé purchased the sample in August 2006 in Tagounite, Morocco.

Physical characteristics: The meteorite consists of a total of 30 dark, magnetic fragments containing yellowish-green silicate in a dark brown matrix.The fragments have a combined weight of 5816 g.

Petrography: (A. Irving and S. Kuehner, UWS) Large olivine grains (up to 8 mm across) with interstitial, porous, banded iron hydroxides enclosing sparse angular grains of terrestrial quartz, and accessory chromite, schreibersite and fresh metal (both kamacite and taenite).

Mineral compositions and geochemistry: Olivine (Fa12.2-13.0, FeO/MnO = 41.1-42.5). Oxygen Isotopes: (D. Rumble, CIW) analysis of acid-washed handpicked olivine by laser fluorination gave δ18O = 3.65, δ17O = 1.72, Δ17O = -0.198(all in ‰).

Classification: Pallasite (main group). The original metal in this specimen is almost entirely weathered to iron hydroxides.

Specimens: A total of 20.1 g of sample, one polished thin section and one polished mount are on deposit at UWS. GHupé holds the main mass.

Data from:
  Table 2
  Line 79:
Place of purchase:Tagounite, Morocco
Mass (g):5812
Type spec mass (g):20.1
Plots: O isotopes:  
   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)
CIW: Carnegie Insitution Washington, Geophysical Laboratory, 5251 Broad Branch Rd., NW, Washington DC 20015, United States (institutional address)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)
References: Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)
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Photos from the Encyclopedia of Meteorites:
The Hupe Collection      
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
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     This is 1 of 1140 approved meteorites from Algeria (plus 27 unapproved names) (plus 4 impact craters)

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