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Northwest Africa 6189
Basic information Name: Northwest Africa 6189
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6189
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass:help 900 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 651 approved meteorites (plus 2 unapproved names) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 9 Jul 2024
Writeuphelp
Writeup from MB 113:

Northwest Africa 6189 (NWA 6189)

(Northwest Africa)

Purchased: 2009

Classification: Carbonaceous chondrite (CO3)

History: Purchased by Aziz Habibi in 2009 from a Moroccan dealer.

Petrography: (A. Irving, UWS, and J. Boesenberg, BrownU) Well-defined, relatively small unequilibrated chondrules (apparent diameter 320±230 µm, N = 26) containing devitrified glass, accompanied by mineral fragments and some small CAI, are set in a fine grained matrix (~20 vol.%) containing kamacite (stained by secondary Fe oxides), taenite, troilite, chromite, ilmenite and merrillite, plus some secondary barite and calcite. Minerals in CAI include forsterite, diopside, gehlenite, ilmenite and anorthite.

Geochemistry: Olivine (Fa17.3±15.6, range Fa0.4-40.8, N = 10; Cr2O3 in ferroan olivine 0.01-0.19 wt.%, mean 0.08±0.12 wt.%, N = 30), low-Ca pyroxene (Fs7.3±8.7Wo1.9±1.2, range Fs2.2-24.0Wo0.9-4.0, N = 6), pigeonite (Fs0.8Wo8.3), augite (Fs1.2Wo42.9), plagioclase (An85.4Or0.5).

Classification: Carbonaceous chondrite (CO3).

Specimens: 20 g including one polished thin section at YPMNH; remainder with Mr. A. Habibi.

Data from:
  MB113
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2009
Mass (g):900
Pieces:1
Class:CO3
Shock stage:S2
Weathering grade:low
Fayalite (mol%):17.3±15.6
Ferrosilite (mol%):7.3±8.7
Wollastonite (mol%):1.9±1.2
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):20
Type spec location:YPMNH
Main mass:A. Habibi
Comments:Work names TB1355 and AH 34; submitted by A. Irving
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)
YPMNH: Yale University Peabody Museum of Natural History P.O. Box 208118 New Haven, CT 06520-8118 , United States; Website (institutional address; updated 30 Aug 2014)
BrownU: Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 21 Jul 2024)
Catalogs:
References: Published in Meteoritical Bulletin, no. 113, in preparation (2024)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
John Tanner   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9829 approved meteorites from (Northwest Africa) (plus 1851 unapproved names)

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