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Northwest Africa 3144
Basic information Name: Northwest Africa 3144
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 3144
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 1053 g
Classification
  history:
Recommended:  CV3    [explanation]

This is 1 of 542 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 28 Sep 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 3144 (NWA 3144)

Northwest Africa

Purchased: 2004 Aug

Classification: Carbonaceous chondrite (CV3)

History: Purchased by Greg Hupé in August 2004 from a dealer in Rissani, Morocco.

Physical characteristics: Very fresh subspherical stone (1053 g) with complete black fusion crust. Relatively large chondrules and white to pale pink CAI are present in a very fine grained dark matrix.

Petrography: (A. Irving and S. Kuehner, UWS; J. Boesenberg, Brown U) Well-formed chondrules (mostly granular but also some BO, apparent diameter 880 ± 330 µm , N = 25), relatively abundant amoeboid to irregularly-shaped, very fine grained CAI and sparse olivine-rich aggregates are set in a fine grained matrix (~20 vol.%, sepia brown in thin section). Olivine-rich chondrules and olivine-rich aggregates consist mainly of forsterite with minor enstatite, taenite, Cr-bearing magnetite (commonly associated with metal), troilite, pentlandite and rare copper metal (containing Mo and Sn). One barred olivine chondrule is surrounded by an olivine aggregate rim with embedded chondrule fragments. Several large CAI appear to be fluffy type A with cores composed of Mg-Al spinel (with variable Fe contents), grossular garnet, perovskite, fassaitic clinopyroxene, anorthite, sodalite (some Ca-bearing), and minor anorthoclase, ilmenite and Ni-Zn metal. Wark-Lovering rims on CAI consist of gehlenite, anorthite, spinel, olivine (~Fa60), andradite garnet, hedenbergite, diopside, kirchsteinite(?) and awaruite (with measurable Pt and Rh).

Geochemistry: (J. Boesenberg, Brown U) Olivine (Fa22.9±19.3, range Fa0.5-45.7, N = 8), enstatite (Fs2.3±2.0Wo2.6±1.4, rangeFs1.1-4.6Wo1.0-3.4, N = 3), subcalcic augite (Fs4.5Wo30.7), plagioclase (An87.8-93.8Or0.0, N = 4).

Classification: Carbonaceous chondrite (CV3).

Specimens: 20 g at AMNH; 1.6 g at PSF converted to a polished thin section; one polished thin section at UWB; remainder with Mr. G. Hupé.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Rissani
Date:P 2004 Aug
Mass (g):1053
Pieces:1
Class:CV3
Shock stage:S2
Weathering grade:low
Fayalite (mol%):22.9±19.3
Ferrosilite (mol%):2.3±2.0
Wollastonite (mol%):2.6±1.4
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):21.6
Type spec location:20 g AMNH/1.6 g PSF
Main mass:G. Hupe
Comments:Work name GH-15; submitted by A. Irving
Institutions
   and collections
AMNH: Department of Earth and Planetary Sciences, American Museum of Natural History, Central Park West, New York, NY 10024, United States (institutional address; updated 18 May 2013)
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Hupe: (old address—now see GHupé or AHupé) G. and A. Hupe, 2616 Lake Youngs Court SE, Renton, WA 98058., United States (private address)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Don Edwards   
The Hupe Collection   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
aranemac   
Gerald Armstrong   
Mirko Graul   
Public domain photographs:
A. Irving   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7472 approved meteorites from (Northwest Africa) (plus 1988 unapproved names)

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