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Northwest Africa 3155
Basic information Name: Northwest Africa 3155
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 3155
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 878 g
Classification
  history:
Meteoritical Bulletin:  MB 91  (2007)  CK5
Recommended:  CK5    [explanation]

This is 1 of 157 approved meteorites classified as CK5.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 1 Sep 2006
Writeuphelp
Writeup from MB 91:

Northwest Africa 3155

Morocco

Find: August 2004

Carbonaceous chondrite (CK5)

History: Purchased in August 2004 by Greg Hupé from a Moroccan dealer in Tagounite.

Physical characteristics: A complete brownish stone with thin fusion crust weighing 878 g.

Petrography: (A. Irving and S. Kuehner, UWS) Dispersed but relatively well-formed, recrystallized chondrules in a fine-grained matrix. Abundant olivine, plagioclase, clinopyroxene, and euhedral to subhedral magnetite.

Geochemistry: Olivine (Fa30–32), plagioclase (An27.6–35.5Or6.8–4.5), clinopyroxene (Mg/(Mg+Fe) ~0.75), Cr-rich magnetite (Cr2O3 = 5.4–5.7 wt%). Oxygen isotopes: (D. Rumble, CIW) Analyses of two different whole rock fragments by laser fluorination gave, respectively, δ18O = -0.41, -0.46; δ17O = -4.59, -4.54; Δ17O = -4.376, -4.299 (all ‰).

Classification: Carbonaceous chondrite (CK5); low shock with moderate weathering.

Type specimen: A total of 20 g of sample and one polished thin section are on deposit at UWS. G. Hupé holds the main mass.

Data from:
  MB91
  Table 2
  Line 150:
Place of purchase:Tagounite, Morocco
Date:2004 Aug
Mass (g):878
Pieces:1
Class:CK5
Shock stage:S1
Weathering grade:W2-3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20
Type spec location:UWS
Main mass:G. Hupé
Plots: O isotopes:  
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)
CIW: Carnegie Insitution Washington, Geophysical Laboratory, 5251 Broad Branch Rd., NW, Washington DC 20015, United States (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)
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)
Jay Piatek   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6968 approved meteorites from (Northwest Africa) (plus 2012 unapproved names)

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