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Northwest Africa 2898
Basic information Name: Northwest Africa 2898
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2898
Observed fall: No
Year found: 2003
Country: (Northwest Africa)
Mass:help 136 g
Meteoritical Bulletin:  MB 90  (2006)  H7
Recommended:  H7    [explanation]

This is 1 of 29 approved meteorites classified as H7.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 21 Sep 2005
Revised 9 Sep 2006: Final classification
Writeup from MB 90:

Northwest Africa 2898

Northwest Africa

Find: 2003

Ordinary chondrite (H7)

History: An anonymous finder recovered a single stone of 136 g within the North African Sahara in 2003.

Petrography: (A. Greshake, MNB) The meteorite has a totally recrystallized texture, with abundant 120° triple junctions of olivine (Fa17.7), low-Ca pyroxene (Fs15.6Wo3.6), and feldspar (An12.3–18.9). No chondrules were observed.

Geochemistry: Oxygen isotopes: (I. Franchi and R. C. Greenwood, OU) δ17O = +2.905, δ18O = +4.4, ∆17O = +0.617 (all ‰).

Classification: Ordinary chondrite (H7); S2, W1/2.

Specimens: A 23 g type specimen and one polished thin section are on deposit at MNB. Stefan Ralew of Germany holds the main mass.

Plots: O isotopes:  
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)
References: Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)
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Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Dirk Hohmann Photo added 19 Apr 2022
Photo added 19 Apr 2022
Photo added 19 Apr 2022

     This is 1 of 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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