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Northwest Africa 2897
Basic information Name: Northwest Africa 2897
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2897
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 23.3 g
Classification
  history:
Recommended:  R3-6    [explanation]

This is 1 of 20 approved meteorites classified as R3-6.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 21 Sep 2005
Writeuphelp
Writeup from MB online:

Northwest Africa 2897

Northwest Africa

Find: 2004

Rumuruti-like (R3–6)

History: An anonymous finder recovered one small stone of 23.3 g in 2004 in the North African Sahara.

Petrography: (A. Greshake, MNB) Olivine (Fa1.2–59.8), low-Ca pyroxene (Fs1.5–30Wo0.1–4.9), augite (Fs7–17Wo24.4–48.5), and plagioclase (An4.9–14).

Geochemistry: Oxygen isotopes: (I. Franchi and R. C. Greenwood, OU) δ17O = +5.542, δ18O = +5.06, ∆17O = +2.91 (all ‰), which are close to Rumuruti itself.

Classification: Rumuruti-like (R3–6); low shock, minimal weathering.

Specimens: A 5.75 g type specimen and one polished thin section are on deposit at MNB. Stefan Ralew of Germany holds the main mass.

Plots: O isotopes:  
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7009 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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