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Northwest Africa 2900
Basic information Name: Northwest Africa 2900
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2900
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 1375 g
Classification
  history:
Meteoritical Bulletin:  MB 90  (2006)  CV3
Recommended:  CV3    [explanation]

This is 1 of 539 approved meteorites (plus 1 unapproved name) classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 21 Sep 2005
Writeuphelp
Writeup from MB online:

Northwest Africa 2900

Northwest Africa

Find: 2004

Carbonaceous chondrite (CV3)

History: An anonymous finder recovered a single stone of 1375 g within the North African Sahara in 2004. Petrography: (A. Greshake, MNB) The stone has a grayish appearance and contains up to centimeter-size dark- and light-colored inclusions and is composed of large chondrules, CAIs, and mineral fragments—all set into a fine-grained, grayish matrix.

Geochemistry: Olivine (Fa14.2, range Fa0.2–31.1), low-Ca pyroxene (Fs0.8–22.9). Oxygen isotopes: (I. Franchi and R. C. Greenwood, OU) δ17O = −1.361, δ18O = +3.027, ∆17O = −2.935 (all ‰).

Classification: Carbonaceous chondrite (CV3); low shock, moderate weathering.

Specimens: A 20.5 g type specimen and one thin section are on deposit at MNB. Stefan Ralew of Germany holds the main mass.

Data from:
  MB90
  Table 2
  Line 156:
Place of purchase:Unknown
Date:2004
Mass (g):1375
Pieces:1
Class:CV3
Type spec mass (g):20.5
Plots: O isotopes:  
Institutions
   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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
André Knöfel   
Dirk Hohmann            
Mirko Graul         
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7385 approved meteorites from (Northwest Africa) (plus 1955 unapproved names)

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