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| Northwest Africa 4482 | |||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 4482 This is an OFFICIAL meteorite name. Abbreviation: NWA 4482 Observed fall: No Year found: 2006 Country: Algeria Mass:  5.81 kg | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 63 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 |
Writeup from MB 92:
Northwest Africa 4482 Algeria 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: MB92 Table 2 Line 79: |
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| Plots: | O isotopes: | ||||||||||||||||||||||||
| Institutions 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) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)
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| Photos: |
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Geography:
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Statistics: This is 1 of 1400 approved meteorites from Algeria (plus 33 unapproved names) (plus 4 impact craters) | ||||||||||||||||||||||||